List of geometers



A geometer is a mathematician whose area of study is geometry.

Some notable geometers and their main fields of work, chronologically listed, are:

1000 BCE to 1 BCE

 * Baudhayana (fl. c. 800 BC) – Euclidean geometry
 * Manava (c. 750 BC–690 BC) – Euclidean geometry
 * Thales of Miletus (c. 624 BC – c. 546 BC) – Euclidean geometry
 * Pythagoras (c. 570 BC – c. 495 BC) – Euclidean geometry, Pythagorean theorem
 * Zeno of Elea (c. 490 BC – c. 430 BC) – Euclidean geometry
 * Hippocrates of Chios (born c. 470 – 410 BC) – first systematically organized Stoicheia – Elements (geometry textbook)
 * Mozi (c. 468 BC – c. 391 BC)
 * Plato (427–347 BC)
 * Theaetetus (c. 417 BC – 369 BC)
 * Autolycus of Pitane (360–c. 290 BC) – astronomy, spherical geometry
 * Euclid (fl. 300 BC) – Elements, Euclidean geometry (sometimes called the "father of geometry")
 * Apollonius of Perga (c. 262 BC – c. 190 BC) – Euclidean geometry, conic sections
 * Archimedes (c. 287 BC – c. 212 BC) – Euclidean geometry
 * Eratosthenes (c. 276 BC – c. 195/194 BC) – Euclidean geometry
 * Katyayana (c. 3rd century BC) – Euclidean geometry

1–1300 AD

 * Hero of Alexandria (c. AD 10–70) – Euclidean geometry
 * Pappus of Alexandria (c. AD 290–c. 350) – Euclidean geometry, projective geometry
 * Hypatia of Alexandria (c. AD 370–c. 415) – Euclidean geometry
 * Brahmagupta (597–668) – Euclidean geometry, cyclic quadrilaterals
 * Vergilius of Salzburg (c.700–784) – Irish bishop of Aghaboe, Ossory and later Salzburg, Austria; antipodes, and astronomy
 * Al-Abbās ibn Said al-Jawharī (c. 800–c. 860)
 * Thabit ibn Qurra (826–901) – analytic geometry, non-Euclidean geometry, conic sections
 * Abu'l-Wáfa (940–998) – spherical geometry, spherical triangles
 * Alhazen (965–c. 1040)
 * Omar Khayyam (1048–1131) – algebraic geometry, conic sections
 * Ibn Maḍāʾ (1116–1196)

1301–1800 AD

 * Piero della Francesca (1415–1492)
 * Leonardo da Vinci (1452–1519) – Euclidean geometry
 * Jyesthadeva (c. 1500 – c. 1610) – Euclidean geometry, cyclic quadrilaterals
 * Marin Getaldić (1568–1626)
 * Jacques-François Le Poivre (1652–1710) – projective geometry
 * Johannes Kepler (1571–1630) – (used geometric ideas in astronomical work)
 * Edmund Gunter (1581–1686)
 * Girard Desargues (1591–1661) – projective geometry; Desargues' theorem
 * René Descartes (1596–1650) – invented the methodology of analytic geometry, also called Cartesian geometry after him
 * Pierre de Fermat (1607–1665) – analytic geometry
 * Blaise Pascal (1623–1662) – projective geometry
 * Christiaan Huygens (1629–1695) – evolute
 * Giordano Vitale (1633–1711)
 * Philippe de La Hire (1640–1718) – projective geometry
 * Isaac Newton (1642–1727) – 3rd-degree algebraic curve
 * Giovanni Ceva (1647–1734) – Euclidean geometry
 * Johann Jacob Heber (1666–1727) – surveyor and geometer
 * Giovanni Gerolamo Saccheri (1667–1733) – non-Euclidean geometry
 * Leonhard Euler (1707–1783)
 * Tobias Mayer (1723–1762)
 * Johann Heinrich Lambert (1728–1777) – non-Euclidean geometry
 * Gaspard Monge (1746–1818) – descriptive geometry
 * John Playfair (1748–1819) – Euclidean geometry
 * Lazare Nicolas Marguerite Carnot (1753–1823) – projective geometry
 * Joseph Diaz Gergonne (1771–1859) – projective geometry; Gergonne point
 * Carl Friedrich Gauss (1777–1855) – Theorema Egregium
 * Louis Poinsot (1777–1859)
 * Siméon Denis Poisson (1781–1840)
 * Jean-Victor Poncelet (1788–1867) – projective geometry
 * Augustin-Louis Cauchy (1789–1857)
 * August Ferdinand Möbius (1790–1868) – Euclidean geometry
 * Nikolai Ivanovich Lobachevsky (1792–1856) – hyperbolic geometry, a non-Euclidean geometry
 * Michel Chasles (1793–1880) – projective geometry
 * Germinal Dandelin (1794–1847) – Dandelin spheres in conic sections
 * Jakob Steiner (1796–1863) – champion of synthetic geometry methodology, projective geometry, Euclidean geometry

1801–1900 AD

 * Karl Wilhelm Feuerbach (1800–1834) – Euclidean geometry
 * Julius Plücker (1801–1868)
 * János Bolyai (1802–1860) – hyperbolic geometry, a non-Euclidean geometry
 * Christian Heinrich von Nagel (1803–1882) – Euclidean geometry
 * Johann Benedict Listing (1808–1882) – topology
 * Hermann Günther Grassmann (1809–1877) – exterior algebra
 * Ludwig Otto Hesse (1811–1874) – algebraic invariants and geometry
 * Ludwig Schlafli (1814–1895) – Regular 4-polytope
 * Pierre Ossian Bonnet (1819–1892) – differential geometry
 * Arthur Cayley (1821–1895)
 * Joseph Bertrand (1822–1900)
 * Delfino Codazzi (1824–1873) – differential geometry
 * Bernhard Riemann (1826–1866) – elliptic geometry (a non-Euclidean geometry) and Riemannian geometry
 * Julius Wilhelm Richard Dedekind (1831–1916)
 * Ludwig Burmester (1840–1927) – theory of linkages
 * Edmund Hess (1843–1903)
 * Albert Victor Bäcklund (1845–1922)
 * Max Noether (1844–1921) – algebraic geometry
 * Henri Brocard (1845–1922) – Brocard points
 * William Kingdon Clifford (1845–1879) – geometric algebra
 * Pieter Hendrik Schoute (1846–1923)
 * Felix Klein (1849–1925)
 * Sofia Vasilyevna Kovalevskaya (1850–1891)
 * Evgraf Fedorov (1853–1919)
 * Henri Poincaré (1854–1912)
 * Luigi Bianchi (1856–1928) – differential geometry
 * Alicia Boole Stott (1860–1940)
 * Hermann Minkowski (1864–1909) – non-Euclidean geometry
 * Henry Frederick Baker (1866–1956) – algebraic geometry
 * Élie Cartan (1869–1951)
 * Dmitri Egorov (1869–1931) – differential geometry
 * Veniamin Kagan (1869–1953)
 * Raoul Bricard (1870–1944) – descriptive geometry
 * Ernst Steinitz (1871–1928) – Steinitz's theorem
 * Marcel Grossmann (1878–1936)
 * Oswald Veblen (1880–1960) – projective geometry, differential geometry
 * Nathan Altshiller Court (1881–1968) – author of College Geometry
 * Emmy Noether (1882–1935) – algebraic topology
 * Harry Clinton Gossard (1884–1954)
 * Arthur Rosenthal (1887–1959)
 * Helmut Hasse (1898–1979) – algebraic geometry

1901–present

 * William Vallance Douglas Hodge (1903–1975)
 * Patrick du Val (1903–1987)
 * Beniamino Segre (1903–1977) – combinatorial geometry
 * J. C. P. Miller (1906–1981)
 * André Weil (1906–1998) – Algebraic geometry
 * H. S. M. Coxeter (1907–2003) – theory of polytopes, non-Euclidean geometry, projective geometry
 * J. A. Todd (1908–1994)
 * Daniel Pedoe (1910–1998)
 * Shiing-Shen Chern (1911–2004) – differential geometry
 * Ernst Witt (1911–1991)
 * Rafael Artzy (1912–2006)
 * Aleksandr Danilovich Aleksandrov (1912–1999)
 * László Fejes Tóth (1915–2005)
 * Edwin Evariste Moise (1918–1998)
 * Aleksei Pogorelov (1919–2002) – differential geometry
 * Magnus Wenninger (1919–2017) – polyhedron models
 * Jean-Louis Koszul (1921–2018)
 * Isaak Yaglom (1921–1988)
 * Eugenio Calabi (1923–2023)
 * Benoit Mandelbrot (1924–2010) – fractal geometry
 * Katsumi Nomizu (1924–2008) – affine differential geometry
 * Michael S. Longuet-Higgins (1925–2016)
 * John Leech (1926–1992)
 * Alexander Grothendieck (1928–2014) – algebraic geometry
 * Branko Grünbaum (1929–2018) – discrete geometry
 * Michael Atiyah (1929–2019)
 * Lev Semenovich Pontryagin (1908–1988)
 * Geoffrey Colin Shephard (1927–2016)
 * Norman W. Johnson (1930–2017)
 * John Milnor (1931–)
 * Roger Penrose (1931–)
 * Yuri Manin (1937–2023) – algebraic geometry and diophantine geometry
 * Vladimir Arnold (1937–2010) – algebraic geometry
 * Ernest Vinberg (1937–2020)
 * J. H. Conway (1937–2020) – sphere packing, recreational geometry
 * Robin Hartshorne (1938–) – geometry, algebraic geometry
 * Phillip Griffiths (1938–) – algebraic geometry, differential geometry
 * Enrico Bombieri (1940–) – algebraic geometry
 * Robert Williams (1942–)
 * Peter McMullen (1942–)
 * Richard S. Hamilton (1943–) – differential geometry, Ricci flow, Poincaré conjecture
 * Mikhail Gromov (1943–)
 * Rudy Rucker (1946–)
 * William Thurston (1946–2012)
 * Shing-Tung Yau (1949–)
 * Michael Freedman (1951–)
 * Egon Schulte (1955–) – polytopes
 * George W. Hart (1955–) – sculptor
 * Károly Bezdek (1955–) – discrete geometry, sphere packing, Euclidean geometry, non-Euclidean geometry
 * Simon Donaldson (1957–)
 * Kenji Fukaya (1959–) – symplectic geometry
 * Oh Yong-Geun (1961–)
 * Toshiyuki Kobayashi (1962–)
 * Hiraku Nakajima (1962–) – representation theory and geometry
 * Hwang Jun-Muk (1963–) – algebraic geometry, differential geometry
 * Grigori Perelman (1966–) – Poincaré conjecture
 * Maryam Mirzakhani (1977–2017)
 * Denis Auroux (1977–)