Timeline of Mathematics

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## Rhetorical stage

### Before 1000 BC

## Syncopated stage

### 1st millennium BC

### 1st millennium AD

## Symbolic stage

### 1000-1500

#### 15th century

### Modern

#### 16th century

#### 17th century

#### 18th century

#### 19th century

### Contemporary

#### 20th century

#### 21st century

## See also

## References

## External links

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Timeline of Mathematics

This is a timeline of pure and applied mathematics history.

- ca. 70,000 BC - South Africa, ochre rocks adorned with scratched geometric patterns (see Blombos Cave).
^{[1]} - ca. 35,000 BC to 20,000 BC - Africa and France, earliest known prehistoric attempts to quantify time.
^{[2]}^{[3]}^{[4]} - c. 20,000 BC - Nile Valley, Ishango Bone: possibly the earliest reference to prime numbers and Egyptian multiplication.
- c. 3400 BC - Mesopotamia, the Sumerians invent the first numeral system, and a system of weights and measures.
- c. 3100 BC - Egypt, earliest known decimal system allows indefinite counting by way of introducing new symbols.
^{[5]} - c. 2800 BC - Indus Valley Civilization on the Indian subcontinent, earliest use of decimal ratios in a uniform system of ancient weights and measures, the smallest unit of measurement used is 1.704 millimetres and the smallest unit of mass used is 28 grams.
- 2700 BC - Egypt, precision surveying.
- 2400 BC - Egypt, precise astronomical calendar, used even in the Middle Ages for its mathematical regularity.
- c. 2000 BC - Mesopotamia, the Babylonians use a base-60 positional numeral system, and compute the first known approximate value of ? at 3.125.
- c. 2000 BC - Scotland, Carved Stone Balls exhibit a variety of symmetries including all of the symmetries of Platonic solids.
- 1800 BC - Egypt, Moscow Mathematical Papyrus, findings volume of a frustum.
- c. 1800 BC - Berlin Papyrus 6619 (Egypt, 19th dynasty) contains a quadratic equation and its solution.
^{[5]} - 1650 BC - Rhind Mathematical Papyrus, copy of a lost scroll from around 1850 BC, the scribe Ahmes presents one of the first known approximate values of ? at 3.16, the first attempt at squaring the circle, earliest known use of a sort of cotangent, and knowledge of solving first order linear equations.

- c. 1000 BC - Simple fractions used by the Egyptians. However, only unit fractions are used (i.e., those with 1 as the numerator) and interpolation tables are used to approximate the values of the other fractions.
^{[6]} - first half of 1st millennium BC - Vedic India - Yajnavalkya, in his Shatapatha Brahmana, describes the motions of the sun and the moon, and advances a 95-year cycle to synchronize the motions of the sun and the moon.
- 800 BC - Baudhayana, author of the Baudhayana Sulba Sutra, a Vedic Sanskrit geometric text, contains quadratic equations, and calculates the square root of two correctly to five decimal places.
- c. 8th century BC - the Yajur Veda, one of the four Hindu Vedas, contains the earliest concept of infinity, and states "if you remove a part from infinity or add a part to infinity, still what remains is infinity."
- 1046 BC to 256 BC - China,
*Zhoubi Suanjing*, arithmetic, geometric algorithms, and proofs. - 624 BC - 546 BC - Thales of Miletus has various theorems attributed to him.
- c. 600 BC - the other Vedic "Sulba Sutras" ("rule of chords" in Sanskrit) use Pythagorean triples, contain of a number of geometrical proofs, and approximate ? at 3.16.
- second half of 1st millennium BC - The Lo Shu Square, the unique normal magic square of order three, was discovered in China.
- 530 BC - Pythagoras studies propositional geometry and vibrating lyre strings; his group also discovers the irrationality of the square root of two.
- c. 510 BC - Anaxagoras
- c. 500 BC - Indian grammarian P?nini writes the
*Astadhyayi*, which contains the use of metarules, transformations and recursions, originally for the purpose of systematizing the grammar of Sanskrit. - c. 500 BC Oenopides of Chios
- 470 BC - 410 BC - Hippocrates of Chios utilizes lunes in an attempt to square the circle.
- 490 BC - 430 BC Zeno of Elea
*Zeno's paradoxes* - 5th century BC - Apastamba, author of the Apastamba Sulba Sutra, another Vedic Sanskrit geometric text, makes an attempt at squaring the circle and also calculates the square root of 2 correct to five decimal places.
- 5th c. BC Theodorus of Cyrene
- 5th century Antiphon the Sophist
- 460 BC - 370 BC Democritus
- 460 BC - 399 BC Hippias
- 5th century (late) Bryson of Heraclea
- 428 BC - 347 BC Archytas
- 423 BC - 347 BC Plato
- 417 BC - 317 BC Theaetetus (mathematician)
- c. 400 BC - Jaina mathematicians in India write the
*Surya Prajinapti*, a mathematical text classifying all numbers into three sets: enumerable, innumerable and infinite. It also recognises five different types of infinity: infinite in one and two directions, infinite in area, infinite everywhere, and infinite perpetually. - 408 BC - 355 BC Eudoxus of Cnidus
- 400 BC - 350 BC Thymaridas
- 395 BC - 313 BC Xenocrates
- 390 BC - 320 BC Dinostratus
- 380- 290 Autolycus of Pitane
- 370 BC - Eudoxus states the method of exhaustion for area determination.
- 370 BC - 300 BC Aristaeus the Elder
- 370 BC - 300 BC Callippus
- 350 BC - Aristotle discusses logical reasoning in
*Organon*. - 4th century BC - Indian texts use the Sanskrit word "Shunya" to refer to the concept of "void" (zero).
- 330 BC - the earliest known work on Chinese geometry, the
*Mo Jing*, is compiled. - 310 BC - 230 BC Aristarchus of Samos
- 390 BC - 310 BC Heraclides of Pontus
- 380 BC - 320 BC Menaechmus
- 300 BC - Jain mathematicians in India write the
*Bhagabati Sutra*, which contains the earliest information on combinations. - 300 BC - Euclid in his
*Elements*studies geometry as an axiomatic system, proves the infinitude of prime numbers and presents the Euclidean algorithm; he states the law of reflection in*Catoptrics*, and he proves the fundamental theorem of arithmetic. - c. 300 BC - Brahmi numerals (ancestor of the common modern base 10 numeral system) are conceived in India.
- 370 BC - 300 BC - Eudemus of Rhodes works on histories of arithmetic, geometry and astronomy now lost.
^{[7]} - 300 BC - Mesopotamia, the Babylonians invent the earliest calculator, the abacus.
- c. 300 BC - Indian mathematician Pingala writes the
*Chhandah-shastra*, which contains the first Indian use of zero as a digit (indicated by a dot) and also presents a description of a binary numeral system, along with the first use of Fibonacci numbers and Pascal's triangle. - 280 BC - 210 BC Nicomedes (mathematician)
- 280 BC - 220BC Philon of Byzantium
- 280 BC - 220 BC Conon of Samos
- 279 BC - 206 BC Chrysippus
- c. 3rd century BC - K?ty?yana
- 250 BC - 190 BC Dionysodorus
- 262 -198 BC Apollonius of Perga
- 260 BC - Archimedes proved that the value of ? lies between 3 + 1/7 (approx. 3.1429) and 3 + 10/71 (approx. 3.1408), that the area of a circle was equal to ? multiplied by the square of the radius of the circle and that the area enclosed by a parabola and a straight line is 4/3 multiplied by the area of a triangle with equal base and height. He also gave a very accurate estimate of the value of the square root of 3.
- c. 250 BC - late Olmecs had already begun to use a true zero (a shell glyph) several centuries before Ptolemy in the New World. See 0 (number).
- 240 BC - Eratosthenes uses his sieve algorithm to quickly isolate prime numbers.
- 240 BC 190 BC Diocles (mathematician)
- 225 BC - Apollonius of Perga writes
*On Conic Sections*and names the ellipse, parabola, and hyperbola. - 202 BC to 186 BC -
*Book on Numbers and Computation*, a mathematical treatise, is written in Han Dynasty China. - 200 BC - 140 BC Zenodorus (mathematician)
- 150 BC - Jain mathematicians in India write the
*Sthananga Sutra*, which contains work on the theory of numbers, arithmetical operations, geometry, operations with fractions, simple equations, cubic equations, quartic equations, and permutations and combinations. - c. 150 BC - Perseus (geometer)
- 150 BC - A method of Gaussian elimination appears in the Chinese text
*The Nine Chapters on the Mathematical Art*. - 150 BC - Horner's method appears in the Chinese text
*The Nine Chapters on the Mathematical Art*. - 150 BC - Negative numbers appear in the Chinese text
*The Nine Chapters on the Mathematical Art*. - 150 BC - 75 BC Zeno of Sidon
- 190 BC - 120 BC - Hipparchus develops the bases of trigonometry.
- 190 BC - 120 BC Hypsicles
- 160 BC - 100 BC Theodosius of Bithynia
- 135 BC - 51 BC Posidonius
- 206 BC to 8 AD - Counting rods are invented in China.
- 78 BC - 37 BC Jing Fang
- 50 BC - Indian numerals, a descendant of the Brahmi numerals (the first positional notation base-10 numeral system), begins development in India.
- mid 1st century Cleomedes (as late as 400 AD)
- final centuries BC - Indian astronomer Lagadha writes the
*Vedanga Jyotisha*, a Vedic text on astronomy that describes rules for tracking the motions of the sun and the moon, and uses geometry and trigonometry for astronomy. - 1st C. BC Geminus
- 50 BC - 23 AD Liu Xin

- 1st century - Heron of Alexandria, (Hero) the earliest fleeting reference to square roots of negative numbers.
- c 100 Theon of Smyrna
- 60 - 120 Nicomachus
- 70 - 140 Menelaus of Alexandria Spherical trigonometry
- 78 - 139 Zhang Heng
- c. 2nd century - Ptolemy of Alexandria wrote the
*Almagest*. - 132 - 192 Cai Yong
- 240 - 300 Sporus of Nicaea
- 250 - Diophantus uses symbols for unknown numbers in terms of syncopated algebra, and writes
*Arithmetica*, one of the earliest treatises on algebra. - 263 - Liu Hui computes ? using Liu Hui's ? algorithm.
- 300 - the earliest known use of zero as a decimal digit is introduced by Indian mathematicians.
- 234 - 305 Porphyry (philosopher)
- 300 - 360 Serenus of Antinouplis
- 335 - 405 Theon of Alexandria
- c. 340 - Pappus of Alexandria states his hexagon theorem and his centroid theorem.
- 350 - 415 Hypatia
- c. 400 - the Bakhshali manuscript is written by Jaina mathematicians, which describes a theory of the infinite containing different levels of infinity, shows an understanding of indices, as well as logarithms to base 2, and computes square roots of numbers as large as a million correct to at least 11 decimal places.
- 300 to 500 - the Chinese remainder theorem is developed by Sun Tzu.
- 300 to 500 - a description of rod calculus is written by Sun Tzu.
- 412 - 485 Proclus
- 420 - 480 Domninus of Larissa
- b 440 Marinus of Neapolis "I wish everything was mathematics."
- 450 - Zu Chongzhi computes ? to seven decimal places. This calculation remains the most accurate calculation for ? for close to a thousand years.
- c. 474 - 558 Anthemius of Tralles
- 500 - Aryabhata writes the
*Aryabhata-Siddhanta*, which first introduces the trigonometric functions and methods of calculating their approximate numerical values. It defines the concepts of sine and cosine, and also contains the earliest tables of sine and cosine values (in 3.75-degree intervals from 0 to 90 degrees). - 480 - 540 Eutocius of Ascalon
- 490 - 560 Simplicius of Cilicia
- 6th century - Aryabhata gives accurate calculations for astronomical constants, such as the solar eclipse and lunar eclipse, computes ? to four decimal places, and obtains whole number solutions to linear equations by a method equivalent to the modern method.
- 505 - 587 Var?hamihira
- 6th century - Yativabha
- 535 - 566 Zhen Luan
- 550 - Hindu mathematicians give zero a numeral representation in the positional notation Indian numeral system.
- 7th century - Bhaskara I gives a rational approximation of the sine function.
- 7th century - Brahmagupta invents the method of solving indeterminate equations of the second degree and is the first to use algebra to solve astronomical problems. He also develops methods for calculations of the motions and places of various planets, their rising and setting, conjunctions, and the calculation of eclipses of the sun and the moon.
- 628 - Brahmagupta writes the
*Brahma-sphuta-siddhanta*, where zero is clearly explained, and where the modern place-value Indian numeral system is fully developed. It also gives rules for manipulating both negative and positive numbers, methods for computing square roots, methods of solving linear and quadratic equations, and rules for summing series, Brahmagupta's identity, and the Brahmagupta theorem. - 602 - 670 Li Chunfeng
- 8th century - Virasena gives explicit rules for the Fibonacci sequence, gives the derivation of the volume of a frustum using an infinite procedure, and also deals with the logarithm to base 2 and knows its laws.
- 8th century - Shridhara gives the rule for finding the volume of a sphere and also the formula for solving quadratic equations.
- 773 - Kanka brings Brahmagupta's Brahma-sphuta-siddhanta to Baghdad to explain the Indian system of arithmetic astronomy and the Indian numeral system.
- 773 - Al-Fazari translates the Brahma-sphuta-siddhanta into Arabic upon the request of King Khalif Abbasid Al Mansoor.
- 9th century - Govindsvamin discovers the Newton-Gauss interpolation formula, and gives the fractional parts of Aryabhata's tabular sines.
- 810 - The House of Wisdom is built in Baghdad for the translation of Greek and Sanskrit mathematical works into Arabic.
- 820 - Al-Khwarizmi - Persian mathematician, father of algebra, writes the
*Al-Jabr*, later transliterated as*Algebra*, which introduces systematic algebraic techniques for solving linear and quadratic equations. Translations of his book on arithmetic will introduce the Hindu-Arabic decimal number system to the Western world in the 12th century. The term*algorithm*is also named after him. - 820 - Al-Mahani conceived the idea of reducing geometrical problems such as doubling the cube to problems in algebra.
- c. 850 - Al-Kindi pioneers cryptanalysis and frequency analysis in his book on cryptography.
- c. 850 - Mah?v?ra writes the Ga?itas?rasan?graha otherwise known as the Ganita Sara Samgraha which gives systematic rules for expressing a fraction as the sum of unit fractions.
- 895 - Thabit ibn Qurra: the only surviving fragment of his original work contains a chapter on the solution and properties of cubic equations. He also generalized the Pythagorean theorem, and discovered the theorem by which pairs of amicable numbers can be found, (i.e., two numbers such that each is the sum of the proper divisors of the other).
- c. 900 - Abu Kamil of Egypt had begun to understand what we would write in symbols as
- 940 - Abu'l-Wafa al-Buzjani extracts roots using the Indian numeral system.
- 953 - The arithmetic of the Hindu-Arabic numeral system at first required the use of a dust board (a sort of handheld blackboard) because "the methods required moving the numbers around in the calculation and rubbing some out as the calculation proceeded." Al-Uqlidisi modified these methods for pen and paper use. Eventually the advances enabled by the decimal system led to its standard use throughout the region and the world.
- 953 - Al-Karaji is the "first person to completely free algebra from geometrical operations and to replace them with the arithmetical type of operations which are at the core of algebra today. He was first to define the monomials , , , ... and , , , ... and to give rules for products of any two of these. He started a school of algebra which flourished for several hundreds of years". He also discovered the binomial theorem for integer exponents, which "was a major factor in the development of numerical analysis based on the decimal system".
- 975 - Al-Batani extended the Indian concepts of sine and cosine to other trigonometrical ratios, like tangent, secant and their inverse functions. Derived the formulae: and .

- c. 1000 - Ab? Sahl al-Q?h? (Kuhi) solves equations higher than the second degree.
- c. 1000 - Abu-Mahmud al-Khujandi first states a special case of Fermat's Last Theorem.
- c. 1000 - Law of sines is discovered by Muslim mathematicians, but it is uncertain who discovers it first between Abu-Mahmud al-Khujandi, Abu Nasr Mansur, and Abu al-Wafa.
- c. 1000 - Pope Sylvester II introduces the abacus using the Hindu-Arabic numeral system to Europe.
- 1000 - Al-Karaji writes a book containing the first known proofs by mathematical induction. He used it to prove the binomial theorem, Pascal's triangle, and the sum of integral cubes.
^{[8]}He was "the first who introduced the theory of algebraic calculus".^{[9]} - c. 1000 - Ibn Tahir al-Baghdadi studied a slight variant of Thabit ibn Qurra's theorem on amicable numbers, and he also made improvements on the decimal system.
- 1020 - Abul Wáfa gave the formula: sin (? + ?) = sin ? cos ? + sin ? cos ?. Also discussed the quadrature of the parabola and the volume of the paraboloid.
- 1021 - Ibn al-Haytham formulated and solved Alhazen's problem geometrically.
- 1030 - Ali Ahmad Nasawi writes a treatise on the decimal and sexagesimal number systems. His arithmetic explains the division of fractions and the extraction of square and cubic roots (square root of 57,342; cubic root of 3, 652, 296) in an almost modern manner.
^{[10]} - 1070 - Omar Khayyám begins to write
*Treatise on Demonstration of Problems of Algebra*and classifies cubic equations. - c. 1100 - Omar Khayyám "gave a complete classification of cubic equations with geometric solutions found by means of intersecting conic sections". He became the first to find general geometric solutions of cubic equations and laid the foundations for the development of analytic geometry and non-Euclidean geometry. He also extracted roots using the decimal system (Hindu-Arabic numeral system).
- 12th century - Indian numerals have been modified by Arab mathematicians to form the modern Hindu-Arabic numeral system (used universally in the modern world).
- 12th century - the Hindu-Arabic numeral system reaches Europe through the Arabs.
- 12th century - Bhaskara Acharya writes the Lilavati, which covers the topics of definitions, arithmetical terms, interest computation, arithmetical and geometrical progressions, plane geometry, solid geometry, the shadow of the gnomon, methods to solve indeterminate equations, and combinations.
- 12th century - Bh?skara II (Bhaskara Acharya) writes the
*Bijaganita*(*Algebra*), which is the first text to recognize that a positive number has two square roots. - 12th century - Bhaskara Acharya conceives differential calculus, and also develops Rolle's theorem, Pell's equation, a proof for the Pythagorean Theorem, proves that division by zero is infinity, computes ? to 5 decimal places, and calculates the time taken for the earth to orbit the sun to 9 decimal places.
- 1130 - Al-Samawal gave a definition of algebra: "[it is concerned] with operating on unknowns using all the arithmetical tools, in the same way as the arithmetician operates on the known."
^{[11]} - 1135 - Sharafeddin Tusi followed al-Khayyam's application of algebra to geometry, and wrote a treatise on cubic equations that "represents an essential contribution to another algebra which aimed to study curves by means of equations, thus inaugurating the beginning of algebraic geometry".
^{[11]} - 1202 - Leonardo Fibonacci demonstrates the utility of Hindu-Arabic numerals in his Liber Abaci (
*Book of the Abacus*). - 1247 - Qin Jiushao publishes
*Shùsh? Ji?zh?ng*(*Mathematical Treatise in Nine Sections*). - 1248 - Li Ye writes
*Ceyuan haijing*, a 12 volume mathematical treatise containing 170 formulas and 696 problems mostly solved by polynomial equations using the method tian yuan shu. - 1260 - Al-Farisi gave a new proof of Thabit ibn Qurra's theorem, introducing important new ideas concerning factorization and combinatorial methods. He also gave the pair of amicable numbers 17296 and 18416 that have also been joint attributed to Fermat as well as Thabit ibn Qurra.
^{[12]} - c. 1250 - Nasir Al-Din Al-Tusi attempts to develop a form of non-Euclidean geometry.
- 1303 - Zhu Shijie publishes
*Precious Mirror of the Four Elements*, which contains an ancient method of arranging binomial coefficients in a triangle. - 14th century - Madhava is considered the father of mathematical analysis, who also worked on the power series for π and for sine and cosine functions, and along with other Kerala school mathematicians, founded the important concepts of calculus.
- 14th century - Parameshvara, a Kerala school mathematician, presents a series form of the sine function that is equivalent to its Taylor series expansion, states the mean value theorem of differential calculus, and is also the first mathematician to give the radius of circle with inscribed cyclic quadrilateral.

- 1400 - Madhava discovers the series expansion for the inverse-tangent function, the infinite series for arctan and sin, and many methods for calculating the circumference of the circle, and uses them to compute ? correct to 11 decimal places.
- c. 1400 - Ghiyath al-Kashi "contributed to the development of decimal fractions not only for approximating algebraic numbers, but also for real numbers such as ?. His contribution to decimal fractions is so major that for many years he was considered as their inventor. Although not the first to do so, al-Kashi gave an algorithm for calculating nth roots, which is a special case of the methods given many centuries later by [Paolo] Ruffini and [William George] Horner." He is also the first to use the decimal point notation in arithmetic and Arabic numerals. His works include
*The Key of arithmetics, Discoveries in mathematics, The Decimal point*, and*The benefits of the zero*. The contents of the*Benefits of the Zero*are an introduction followed by five essays: "On whole number arithmetic", "On fractional arithmetic", "On astrology", "On areas", and "On finding the unknowns [unknown variables]". He also wrote the*Thesis on the sine and the chord*and*Thesis on finding the first degree sine*. - 15th century - Ibn al-Banna and al-Qalasadi introduced symbolic notation for algebra and for mathematics in general.
^{[11]} - 15th century - Nilakantha Somayaji, a Kerala school mathematician, writes the
*Aryabhatiya Bhasya*, which contains work on infinite-series expansions, problems of algebra, and spherical geometry. - 1424 - Ghiyath al-Kashi computes ? to sixteen decimal places using inscribed and circumscribed polygons.
- 1427 - Al-Kashi completes
*The Key to Arithmetic*containing work of great depth on decimal fractions. It applies arithmetical and algebraic methods to the solution of various problems, including several geometric ones. - 1464 - Regiomontanus writes
*De Triangulis omnimodus*which is one of the earliest texts to treat trigonometry as a separate branch of mathematics. - 1478 - An anonymous author writes the
*Treviso Arithmetic*. - 1494 - Luca Pacioli writes
*Summa de arithmetica, geometria, proportioni et proportionalità*; introduces primitive symbolic algebra using "co" (cosa) for the unknown.

- 1501 - Nilakantha Somayaji writes the Tantrasamgraha.
- 1520 - Scipione dal Ferro develops a method for solving "depressed" cubic equations (cubic equations without an x
^{2}term), but does not publish. - 1522 - Adam Ries explained the use of Arabic digits and their advantages over Roman numerals.
- 1535 - Niccolò Tartaglia independently develops a method for solving depressed cubic equations but also does not publish.
- 1539 - Gerolamo Cardano learns Tartaglia's method for solving depressed cubics and discovers a method for depressing cubics, thereby creating a method for solving all cubics.
- 1540 - Lodovico Ferrari solves the quartic equation.
- 1544 - Michael Stifel publishes
*Arithmetica integra*. - 1545 - Gerolamo Cardano conceives the idea of complex numbers.
- 1550 - Jyeshtadeva, a Kerala school mathematician, writes the
*Yuktibh*, the world's first calculus text, which gives detailed derivations of many calculus theorems and formulae. - 1572 - Rafael Bombelli writes
*Algebra*treatise and uses imaginary numbers to solve cubic equations. - 1584 - Zhu Zaiyu calculates equal temperament.
- 1596 - Ludolf van Ceulen computes ? to twenty decimal places using inscribed and circumscribed polygons.

- 1614 - John Napier discusses Napierian logarithms in
*Mirifici Logarithmorum Canonis Descriptio*. - 1617 - Henry Briggs discusses decimal logarithms in
*Logarithmorum Chilias Prima*. - 1618 - John Napier publishes the first references to
*e*in a work on logarithms. - 1619 - René Descartes discovers analytic geometry (Pierre de Fermat claimed that he also discovered it independently).
- 1619 - Johannes Kepler discovers two of the Kepler-Poinsot polyhedra.
- 1629 - Pierre de Fermat develops a rudimentary differential calculus.
- 1634 - Gilles de Roberval shows that the area under a cycloid is three times the area of its generating circle.
- 1636 - Muhammad Baqir Yazdi jointly discovered the pair of amicable numbers 9,363,584 and 9,437,056 along with Descartes (1636).
^{[12]} - 1637 - Pierre de Fermat claims to have proven Fermat's Last Theorem in his copy of Diophantus'
*Arithmetica*. - 1637 - First use of the term imaginary number by René Descartes; it was meant to be derogatory.
- 1643 - René Descartes develops Descartes' theorem.
- 1654 - Blaise Pascal and Pierre de Fermat create the theory of probability.
- 1655 - John Wallis writes
*Arithmetica Infinitorum*. - 1658 - Christopher Wren shows that the length of a cycloid is four times the diameter of its generating circle.
- 1665 - Isaac Newton works on the fundamental theorem of calculus and develops his version of infinitesimal calculus.
- 1668 - Nicholas Mercator and William Brouncker discover an infinite series for the logarithm while attempting to calculate the area under a hyperbolic segment.
- 1671 - James Gregory develops a series expansion for the inverse-tangent function (originally discovered by Madhava).
- 1671 - James Gregory discovers Taylor's Theorem.
- 1673 - Gottfried Leibniz also develops his version of infinitesimal calculus.
- 1675 - Isaac Newton invents an algorithm for the computation of functional roots.
- 1680s - Gottfried Leibniz works on symbolic logic.
- 1683 - Seki Takakazu discovers the resultant and determinant.
- 1683 - Seki Takakazu develops elimination theory.
- 1691 - Gottfried Leibniz discovers the technique of separation of variables for ordinary differential equations.
- 1693 - Edmund Halley prepares the first mortality tables statistically relating death rate to age.
- 1696 - Guillaume de L'Hôpital states his rule for the computation of certain limits.
- 1696 - Jakob Bernoulli and Johann Bernoulli solve brachistochrone problem, the first result in the calculus of variations.
- 1699 - Abraham Sharp calculates ? to 72 digits but only 71 are correct.

- 1706 - John Machin develops a quickly converging inverse-tangent series for ? and computes ? to 100 decimal places.
- 1708 - Seki Takakazu discovers Bernoulli numbers. Jacob Bernoulli whom the numbers are named after is believed to have independently discovered the numbers shortly after Takakazu.
- 1712 - Brook Taylor develops Taylor series.
- 1722 - Abraham de Moivre states de Moivre's formula connecting trigonometric functions and complex numbers.
- 1722 - Takebe Kenko introduces Richardson extrapolation.
- 1724 - Abraham De Moivre studies mortality statistics and the foundation of the theory of annuities in
*Annuities on Lives*. - 1730 - James Stirling publishes
*The Differential Method*. - 1733 - Giovanni Gerolamo Saccheri studies what geometry would be like if Euclid's fifth postulate were false.
- 1733 - Abraham de Moivre introduces the normal distribution to approximate the binomial distribution in probability.
- 1734 - Leonhard Euler introduces the integrating factor technique for solving first-order ordinary differential equations.
- 1735 - Leonhard Euler solves the Basel problem, relating an infinite series to ?.
- 1736 - Leonhard Euler solves the problem of the Seven bridges of Königsberg, in effect creating graph theory.
- 1739 - Leonhard Euler solves the general homogeneous linear ordinary differential equation with constant coefficients.
- 1742 - Christian Goldbach conjectures that every even number greater than two can be expressed as the sum of two primes, now known as Goldbach's conjecture.
- 1747 - Jean le Rond d'Alembert solves the vibrating string problem (one-dimensional wave equation).
^{[13]} - 1748 - Maria Gaetana Agnesi discusses analysis in
*Instituzioni Analitiche ad Uso della Gioventu Italiana*. - 1761 - Thomas Bayes proves Bayes' theorem.
- 1761 - Johann Heinrich Lambert proves that ? is irrational.
- 1762 - Joseph Louis Lagrange discovers the divergence theorem.
- 1789 - Jurij Vega improves Machin's formula and computes ? to 140 decimal places, 136 of which were correct.
- 1794 - Jurij Vega publishes
*Thesaurus Logarithmorum Completus*. - 1796 - Carl Friedrich Gauss proves that the regular 17-gon can be constructed using only a compass and straightedge.
- 1796 - Adrien-Marie Legendre conjectures the prime number theorem.
- 1797 - Caspar Wessel associates vectors with complex numbers and studies complex number operations in geometrical terms.
- 1799 - Carl Friedrich Gauss proves the fundamental theorem of algebra (every polynomial equation has a solution among the complex numbers).
- 1799 - Paolo Ruffini partially proves the Abel-Ruffini theorem that quintic or higher equations cannot be solved by a general formula.

- 1801 -
*Disquisitiones Arithmeticae*, Carl Friedrich Gauss's number theory treatise, is published in Latin. - 1805 - Adrien-Marie Legendre introduces the method of least squares for fitting a curve to a given set of observations.
- 1806 - Louis Poinsot discovers the two remaining Kepler-Poinsot polyhedra.
- 1806 - Jean-Robert Argand publishes proof of the Fundamental theorem of algebra and the Argand diagram.
- 1807 - Joseph Fourier announces his discoveries about the trigonometric decomposition of functions.
- 1811 - Carl Friedrich Gauss discusses the meaning of integrals with complex limits and briefly examines the dependence of such integrals on the chosen path of integration.
- 1815 - Siméon Denis Poisson carries out integrations along paths in the complex plane.
- 1817 - Bernard Bolzano presents the intermediate value theorem--a continuous function that is negative at one point and positive at another point must be zero for at least one point in between.
- 1822 - Augustin-Louis Cauchy presents the Cauchy integral theorem for integration around the boundary of a rectangle in the complex plane.
- 1822 - Irisawa Shintar? Hiroatsu analyzes Soddy's hexlet in a Sangaku.
- 1823 - Sophie Germain's Theorem is published in the second edition of Adrien-Marie Legendre's Essai sur la théorie des nombres
^{[14]} - 1824 - Niels Henrik Abel partially proves the Abel-Ruffini theorem that the general quintic or higher equations cannot be solved by a general formula involving only arithmetical operations and roots.
- 1825 - Augustin-Louis Cauchy presents the Cauchy integral theorem for general integration paths--he assumes the function being integrated has a continuous derivative, and he introduces the theory of residues in complex analysis.
- 1825 - Peter Gustav Lejeune Dirichlet and Adrien-Marie Legendre prove Fermat's Last Theorem for
*n*= 5. - 1825 - André-Marie Ampère discovers Stokes' theorem.
- 1828 - George Green proves Green's theorem.
- 1829 - János Bolyai, Gauss, and Lobachevsky invent hyperbolic non-Euclidean geometry.
- 1831 - Mikhail Vasilievich Ostrogradsky rediscovers and gives the first proof of the divergence theorem earlier described by Lagrange, Gauss and Green.
- 1832 - Évariste Galois presents a general condition for the solvability of algebraic equations, thereby essentially founding group theory and Galois theory.
- 1832 - Lejeune Dirichlet proves Fermat's Last Theorem for
*n*= 14. - 1835 - Lejeune Dirichlet proves Dirichlet's theorem about prime numbers in arithmetical progressions.
- 1837 - Pierre Wantzel proves that doubling the cube and trisecting the angle are impossible with only a compass and straightedge, as well as the full completion of the problem of constructability of regular polygons.
- 1837 - Peter Gustav Lejeune Dirichlet develops Analytic number theory.
- 1841 - Karl Weierstrass discovers but does not publish the Laurent expansion theorem.
- 1843 - Pierre-Alphonse Laurent discovers and presents the Laurent expansion theorem.
- 1843 - William Hamilton discovers the calculus of quaternions and deduces that they are non-commutative.
- 1847 - George Boole formalizes symbolic logic in
*The Mathematical Analysis of Logic*, defining what is now called Boolean algebra. - 1849 - George Gabriel Stokes shows that solitary waves can arise from a combination of periodic waves.
- 1850 - Victor Alexandre Puiseux distinguishes between poles and branch points and introduces the concept of essential singular points.
- 1850 - George Gabriel Stokes rediscovers and proves Stokes' theorem.
- 1854 - Bernhard Riemann introduces Riemannian geometry.
- 1854 - Arthur Cayley shows that quaternions can be used to represent rotations in four-dimensional space.
- 1858 - August Ferdinand Möbius invents the Möbius strip.
- 1858 - Charles Hermite solves the general quintic equation by means of elliptic and modular functions.
- 1859 - Bernhard Riemann formulates the Riemann hypothesis, which has strong implications about the distribution of prime numbers.
- 1870 - Felix Klein constructs an analytic geometry for Lobachevski's geometry thereby establishing its self-consistency and the logical independence of Euclid's fifth postulate.
- 1872 - Richard Dedekind invents what is now called the Dedekind Cut for defining irrational numbers, and now used for defining surreal numbers.
- 1873 - Charles Hermite proves that e is transcendental.
- 1873 - Georg Frobenius presents his method for finding series solutions to linear differential equations with regular singular points.
- 1874 - Georg Cantor proves that the set of all real numbers is uncountably infinite but the set of all real algebraic numbers is countably infinite. His proof does not use his diagonal argument, which he published in 1891.
- 1882 - Ferdinand von Lindemann proves that ? is transcendental and that therefore the circle cannot be squared with a compass and straightedge.
- 1882 - Felix Klein invents the Klein bottle.
- 1895 - Diederik Korteweg and Gustav de Vries derive the Korteweg-de Vries equation to describe the development of long solitary water waves in a canal of rectangular cross section.
- 1895 - Georg Cantor publishes a book about set theory containing the arithmetic of infinite cardinal numbers and the continuum hypothesis.
- 1895 - Henri Poincaré publishes paper "Analysis Situs" which started modern topology.
- 1896 - Jacques Hadamard and Charles Jean de la Vallée-Poussin independently prove the prime number theorem.
- 1896 - Hermann Minkowski presents
*Geometry of numbers*. - 1899 - Georg Cantor discovers a contradiction in his set theory.
- 1899 - David Hilbert presents a set of self-consistent geometric axioms in
*Foundations of Geometry*. - 1900 - David Hilbert states his list of 23 problems, which show where some further mathematical work is needed.

^{[15]}

- 1901 - Élie Cartan develops the exterior derivative.
- 1901 - Henri Lebesgue publishes on Lebesgue integration.
- 1903 - Carle David Tolmé Runge presents a fast Fourier transform algorithm
^{[]} - 1903 - Edmund Georg Hermann Landau gives considerably simpler proof of the prime number theorem.
- 1908 - Ernst Zermelo axiomizes set theory, thus avoiding Cantor's contradictions.
- 1908 - Josip Plemelj solves the Riemann problem about the existence of a differential equation with a given monodromic group and uses Sokhotsky - Plemelj formulae.
- 1912 - Luitzen Egbertus Jan Brouwer presents the Brouwer fixed-point theorem.
- 1912 - Josip Plemelj publishes simplified proof for the Fermat's Last Theorem for exponent
*n*= 5. - 1915 - Emmy Noether proves her symmetry theorem, which shows that every symmetry in physics has a corresponding conservation law.
- 1916 - Srinivasa Ramanujan introduces Ramanujan conjecture. This conjecture is later generalized by Hans Petersson.
- 1919 - Viggo Brun defines Brun's constant
*B*_{2}for twin primes. - 1921 - Emmy Noether introduces the first general definition of a commutative ring.
- 1928 - John von Neumann begins devising the principles of game theory and proves the minimax theorem.
- 1929 - Emmy Noether introduces the first general representation theory of groups and algebras.
- 1930 - Casimir Kuratowski shows that the three-cottage problem has no solution.
- 1930 - Alonzo Church introduces Lambda calculus.
- 1931 - Kurt Gödel proves his incompleteness theorem, which shows that every axiomatic system for mathematics is either incomplete or inconsistent.
- 1931 - Georges de Rham develops theorems in cohomology and characteristic classes.
- 1933 - Karol Borsuk and Stanislaw Ulam present the Borsuk-Ulam antipodal-point theorem.
- 1933 - Andrey Nikolaevich Kolmogorov publishes his book
*Basic notions of the calculus of probability*(*Grundbegriffe der Wahrscheinlichkeitsrechnung*), which contains an axiomatization of probability based on measure theory. - 1940 - Kurt Gödel shows that neither the continuum hypothesis nor the axiom of choice can be disproven from the standard axioms of set theory.
- 1942 - G.C. Danielson and Cornelius Lanczos develop a fast Fourier transform algorithm.
- 1943 - Kenneth Levenberg proposes a method for nonlinear least squares fitting.
- 1945 - Stephen Cole Kleene introduces realizability.
- 1945 - Saunders Mac Lane and Samuel Eilenberg start category theory.
- 1945 - Norman Steenrod and Samuel Eilenberg give the Eilenberg-Steenrod axioms for (co-)homology.
- 1946 - Jean Leray introduces the Spectral sequence.
- 1948 - John von Neumann mathematically studies self-reproducing machines.
- 1948 - Alan Turing introduces LU decomposition.
- 1949 - John Wrench and L.R. Smith compute ? to 2,037 decimal places using ENIAC.
- 1949 - Claude Shannon develops notion of Information Theory.
- 1950 - Stanis?aw Ulam and John von Neumann present cellular automata dynamical systems.
- 1953 - Nicholas Metropolis introduces the idea of thermodynamic simulated annealing algorithms.
- 1955 - H. S. M. Coxeter et al. publish the complete list of uniform polyhedron.
- 1955 - Enrico Fermi, John Pasta, Stanis?aw Ulam, and Mary Tsingou numerically study a nonlinear spring model of heat conduction and discover solitary wave type behavior.
- 1956 - Noam Chomsky describes a hierarchy of formal languages.
- 1957 - Kiyosi Itô develops Itô calculus.
- 1957 - Stephen Smale provides the existence proof for crease-free sphere eversion.
- 1958 - Alexander Grothendieck's proof of the Grothendieck-Riemann-Roch theorem is published.
- 1959 - Kenkichi Iwasawa creates Iwasawa theory.
- 1960 - C. A. R. Hoare invents the quicksort algorithm.
- 1960 - Irving S. Reed and Gustave Solomon present the Reed-Solomon error-correcting code.
- 1961 - Daniel Shanks and John Wrench compute ? to 100,000 decimal places using an inverse-tangent identity and an IBM-7090 computer.
- 1961 - John G. F. Francis and Vera Kublanovskaya independently develop the QR algorithm to calculate the eigenvalues and eigenvectors of a matrix.
- 1961 - Stephen Smale proves the Poincaré conjecture for all dimensions greater than or equal to 5.
- 1962 - Donald Marquardt proposes the Levenberg-Marquardt nonlinear least squares fitting algorithm.
- 1962 - Gloria Conyers Hewitt becomes the third African American woman to receive a PhD in mathematics.
- 1963 - Paul Cohen uses his technique of forcing to show that neither the continuum hypothesis nor the axiom of choice can be proven from the standard axioms of set theory.
- 1963 - Martin Kruskal and Norman Zabusky analytically study the Fermi-Pasta-Ulam-Tsingou heat conduction problem in the continuum limit and find that the KdV equation governs this system.
- 1963 - meteorologist and mathematician Edward Norton Lorenz published solutions for a simplified mathematical model of atmospheric turbulence - generally known as chaotic behaviour and strange attractors or Lorenz Attractor - also the Butterfly Effect.
- 1965 - Iranian mathematician Lotfi Asker Zadeh founded fuzzy set theory as an extension of the classical notion of set and he founded the field of Fuzzy Mathematics.
- 1965 - Martin Kruskal and Norman Zabusky numerically study colliding solitary waves in plasmas and find that they do not disperse after collisions.
- 1965 - James Cooley and John Tukey present an influential fast Fourier transform algorithm.
- 1966 - E. J. Putzer presents two methods for computing the exponential of a matrix in terms of a polynomial in that matrix.
- 1966 - Abraham Robinson presents non-standard analysis.
- 1967 - Robert Langlands formulates the influential Langlands program of conjectures relating number theory and representation theory.
- 1968 - Michael Atiyah and Isadore Singer prove the Atiyah-Singer index theorem about the index of elliptic operators.
- 1973 - Lotfi Zadeh founded the field of fuzzy logic.
- 1975 - Benoît Mandelbrot publishes
*Les objets fractals, forme, hasard et dimension*. - 1976 - Kenneth Appel and Wolfgang Haken use a computer to prove the Four color theorem.
- 1978 - Olga Taussky-Todd is awarded the Austrian Cross of Honour for Science and Art, 1st Class, the highest scientific award of the government of Austria.
- 1981 - Richard Feynman gives an influential talk "Simulating Physics with Computers" (in 1980 Yuri Manin proposed the same idea about quantum computations in "Computable and Uncomputable" (in Russian)).
- 1983 - Gerd Faltings proves the Mordell conjecture and thereby shows that there are only finitely many whole number solutions for each exponent of Fermat's Last Theorem.
- 1983 - the classification of finite simple groups, a collaborative work involving some hundred mathematicians and spanning thirty years, is completed.
- 1985 - Louis de Branges de Bourcia proves the Bieberbach conjecture.
- 1986 - Ken Ribet proves Ribet's theorem.
- 1987 - Yasumasa Kanada, David Bailey, Jonathan Borwein, and Peter Borwein use iterative modular equation approximations to elliptic integrals and a NEC SX-2 supercomputer to compute ? to 134 million decimal places.
- 1991 - Alain Connes and John W. Lott develop non-commutative geometry.
- 1992 - David Deutsch and Richard Jozsa develop the Deutsch-Jozsa algorithm, one of the first examples of a quantum algorithm that is exponentially faster than any possible deterministic classical algorithm.
- 1994 - Andrew Wiles proves part of the Taniyama-Shimura conjecture and thereby proves Fermat's Last Theorem.
- 1994 - Peter Shor formulates Shor's algorithm, a quantum algorithm for integer factorization.
- 1995 - Simon Plouffe discovers Bailey-Borwein-Plouffe formula capable of finding the
*n*th binary digit of ?. - 1998 - Thomas Callister Hales (almost certainly) proves the Kepler conjecture.
- 1999 - the full Taniyama-Shimura conjecture is proven.
- 2000 - the Clay Mathematics Institute proposes the seven Millennium Prize Problems of unsolved important classic mathematical questions.

- 2002 - Manindra Agrawal, Nitin Saxena, and Neeraj Kayal of IIT Kanpur present an unconditional deterministic polynomial time algorithm to determine whether a given number is prime (the AKS primality test).
- 2002 - Yasumasa Kanada, Y. Ushiro, Hisayasu Kuroda, Makoto Kudoh and a team of nine more compute ? to 1241.1 billion digits using a Hitachi 64-node supercomputer.
- 2002 - Preda Mih?ilescu proves Catalan's conjecture.
- 2003 - Grigori Perelman proves the Poincaré conjecture.
- 2004 - Ben Green and Terence Tao prove the Green-Tao theorem.
- 2007 - a team of researchers throughout North America and Europe used networks of computers to map E
_{8}.^{[16]} - 2009 - Fundamental lemma (Langlands program) had been proved by Ngô B?o Châu.
^{[17]} - 2010 - Larry Guth and Nets Hawk Katz solve the Erd?s distinct distances problem.
- 2013 - Yitang Zhang proves the first finite bound on gaps between prime numbers.
^{[18]} - 2014 - Project Flyspeck
^{[19]}announces that it completed proof of Kepler's conjecture.^{[20]}^{[21]}^{[22]}^{[23]} - 2014 - Using Alexander Yee's y-cruncher "houkouonchi" successfully calculated ? to 13.3 trillion digits.
^{[24]} - 2015 - Terence Tao solved The Erdös Discrepancy Problem
- 2015 - László Babai found that a quasipolynomial complexity algorithm would solve the Graph Isomorphism Problem
- 2016 - Using Alexander Yee's y-cruncher Peter Trueb successfully calculated ? to 22.4 trillion digits
^{[25]}

**^**Art Prehistory, Sean Henahan, January 10, 2002. Archived July 19, 2008, at the Wayback Machine.**^**How Menstruation Created Mathematics, Tacoma Community College, (archive link).**^**"OLDEST Mathematical Object is in Swaziland". Retrieved 2015.**^**"an old Mathematical Object". Retrieved 2015.- ^
^{a}^{b}"Egyptian Mathematical Papyri - Mathematicians of the African Diaspora". Retrieved 2015. **^**Carl B. Boyer,*A History of Mathematics*, 2nd Ed.**^**Corsi, Pietro; Weindling, Paul (1983).*Information sources in the history of science and medicine*. Butterworth Scientific. ISBN 9780408107648. Retrieved 2014.**^**Victor J. Katz (1998).*History of Mathematics: An Introduction*, p. 255-259. Addison-Wesley. ISBN 0-321-01618-1.**^**F. Woepcke (1853).*Extrait du Fakhri, traité d'Algèbre par Abou Bekr Mohammed Ben Alhacan Alkarkhi*. Paris.**^**O'Connor, John J.; Robertson, Edmund F., "Abu l'Hasan Ali ibn Ahmad Al-Nasawi",*MacTutor History of Mathematics archive*, University of St Andrews.- ^
^{a}^{b}^{c}Arabic mathematics,*MacTutor History of Mathematics archive*, University of St Andrews, Scotland - ^
^{a}^{b}Various AP Lists and Statistics Archived July 28, 2012, at the Wayback Machine. **^**D'Alembert (1747) "Recherches sur la courbe que forme une corde tenduë mise en vibration" (Researches on the curve that a tense cord [string] forms [when] set into vibration),*Histoire de l'académie royale des sciences et belles lettres de Berlin*, vol. 3, pages 214-219.**^**https://www.agnesscott.edu/lriddle/women/germain-FLT/SGandFLT.htm**^**Paul Benacerraf and Hilary Putnam, Cambridge University Press,*Philosophy of Mathematics: Selected Readings, ISBN 0-521-29648-X***^**Elizabeth A. Thompson, MIT News Office,*Math research team maps E8*Mathematicians Map E8, Harminka, 2007-03-20**^**Laumon, G.; Ngô, B. C. (2004),*Le lemme fondamental pour les groupes unitaires*, arXiv:math/0404454, Bibcode:2004math......4454L**^**"UNH Mathematician's Proof Is Breakthrough Toward Centuries-Old Problem". University of New Hampshire. May 1, 2013. Retrieved 2013.**^**Announcement of Completion. Project Flyspeck, Google Code.**^**Team announces construction of a formal computer-verified proof of the Kepler conjecture. August 13, 2014 by Bob Yirk.**^**Proof confirmed of 400-year-old fruit-stacking problem, 12 August 2014; New Scientist.**^**A formal proof of the Kepler conjecture, arXiv.**^**Solved: 400-Year-Old Maths Theory Finally Proven. Sky News, 16:39, UK, Tuesday 12 August 2014.**^**"y-cruncher - A Multi-Threaded Pi Program".*numberworld.org*. Retrieved 2015.**^**"y-cruncher - A Multi-Threaded Pi Program".*numberworld.org*. Retrieved 2016.

- David Eugene Smith, 1929 and 1959,
*A Source Book in Mathematics*, Dover Publications. ISBN 0-486-64690-4.

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