Plane Geometry

Srinivasa Ramanujan Srinivasa Ramanujan- Published and unpublished works. HTML, PDF and DjVu formats. Kolmogorov, Andrei Nikolaevich (1903-1987) Kolmogorov, Andrei Nikolaevich (1903-1987)- Worked on trigonometric series, set theory, integration analysis, constructive logic, topology, approximation methods, probability, sta… Pell, John (1611-1685) Pell, John (1611-1685)- Worked on algebra and number theory, gave a table of factors of all integers up to 100000 in 1668. Pell's equation is y^2 = ax^2 + 1, where a is a non-squa… Diophantus of Alexandria (c. 200-284 ) Diophantus of Alexandria (c. 200-284 )- Best known for his Arithmetica, a work on the theory of numbers, a collection of 130 problems giving numerical solutions of determinate equ… Cramer - Gabriel Cramer (1704-1752) Cramer - Gabriel Cramer (1704-1752)- Best known for his work on determinants, made contributions to the study of algebraic curves. Schmidt, Erhard (1876-1959) Schmidt, Erhard (1876-1959)- Main research was functional analysis, doctorate was obtained under Hilbert's supervision, main interest was in integral equations and Hilbert space, … Eratosthenes: The Measurement of the Earth's Circumference Eratosthenes: The Measurement of the Earth's Circumference- Gives information about the techniques and computations used by this ancient mathematician to find the circumference of… Johann Carl Friedrich Gauss (1777-1855) Johann Carl Friedrich Gauss (1777-1855)- Article by J J O'Connor and E F Robertson giving biographical details of the great mathematician, with a number of photographs. The Grothendieck Circle The Grothendieck Circle- Aims to make publicly available materials written by and about Alexandre Grothendieck. Made contributions to algebraic geometry, homological algebra and f… Hermann Gunter Grassmann Hermann Gunter Grassmann- Provides biographical details of this German mathematician who lived from 1809 to 1877, the inventor of what is now called exterior algebra. Julius Wilhelm Richard Dedekind Julius Wilhelm Richard Dedekind- Provides biographical details of this German mathematician who lived from 1831 to 1916. A Chonicle of Mathematical People A Chonicle of Mathematical People- Robert A. Nowlan provides short biographical sketches of mathematicians from many diverse fields. History of Mathematics History of Mathematics- Online texts of historic mathematical people, including Hamilton, Riemann, Newton, Boole, and Cantor. Also, has biographical backgrounds for key figures du… Fibonacci Mathematics by Dr. Peter Reimers Fibonacci Mathematics by Dr. Peter Reimers- Describes the rabbit problem and the Fibonacci sequence and some generalized rules. Sheynin, Oscar Sheynin, Oscar- Freelance researcher specializes in the history of probability, statistics and error theory. Page includes list of publications and outside reviews. Shortest path to Gauss Shortest path to Gauss- This site is the quickest access to information about C.F.Gauss, although reduced to a single page. Eratosthenes of Cyrene (276-194 BC) Eratosthenes of Cyrene (276-194 BC)- Discusses this early Grecian's discoveries in finding a good approximation of the circumference of the earth, the tilt angle of our planet and… The Grothendieck Biography Project The Grothendieck Biography Project- Links relating to Alexandre Groethendieck. Andrei Nikolaevich Kolmogorov (1903-1987) Andrei Nikolaevich Kolmogorov (1903-1987)- The most prominent twentieth-century mathematician. University of St. Andrews: Biography Index University of St. Andrews: Biography Index- Names are listed alphabetically or by date, from 1680 BC to the present. The History of Mathematics The History of Mathematics- Collection of original papers of Berkeley, Hamilton, Riemann, Boole, Cantor, and Newton. Includes background and notes. Maintained by David R. Wilkins … Al-Sabi Thabit ibn Qurra al-Harrani Al-Sabi Thabit ibn Qurra al-Harrani- Gives information on background and contributions to non-euclidean geometry, spherical trigonometry, number theory and the field of statics. W… Peirce, Benjamin (1809-1880) Peirce, Benjamin (1809-1880)- Life and work of 19th century mathematician and philosopher of mathematics; by Ivor Grattan-Guinness and Alison Walsh. Oughtred, William (1574-1660) Oughtred, William (1574-1660)- Best known for the invention of an early form of the slide rule. Lambert - Johann Heinrich Lambert (1728 - 1777) Lambert - Johann Heinrich Lambert (1728 - 1777)- In a memoir in 1768 on transcendental magnitudes he proved that pi is incommensurable. Gauss, Johann Carl Friedrich (1777-1855) Gauss, Johann Carl Friedrich (1777-1855)- One of the all-time greats, Gauss began to show his mathematical brilliance at the early age of seven. He is usually credited with the fi… Dirichlet - Johann Peter Gustav Lejeune Dirichlet (1805-1859) Dirichlet - Johann Peter Gustav Lejeune Dirichlet (1805-1859)- Proved that in any arithmetic progression with first term coprime to the difference there are infinitely many primes… Chebyshev - Pafnuty Lvovich Chebyshev (1821-1894) Chebyshev - Pafnuty Lvovich Chebyshev (1821-1894)- Work on prime numbers included the determination of the number of primes not exceeding a given number, wrote an important book o… Cauchy, Augustin Louis (1789-1857) Cauchy, Augustin Louis (1789-1857)- Cauchy contributed to almost every branch of mathematics. He is probably best known for his important contributions to real and complex analysi… Bessel - Friedrich Wilhelm Bessel (1784-1846) Bessel - Friedrich Wilhelm Bessel (1784-1846)- Catalogued stars, predicted a planet beyond Uranus as well as the existence of dark stars, investigated Johann Kepler's problem of h…