Chronological Order Essay, Research Paper

-399pythagoreans discover irrational numbers

-240Eratosthenes determines circumference of earth

-230Archimedes determines fromulas for the area of a secton of a parabolaformulas forthe area of a section of a parabola

-200Appollonius studies conic sections

-200Euclid writes Elements

-100Hipparchus develops the trig tables

825Al-Khowarizmi uses Zero

1525Rudolff introduces the radical sign

1535Tartaglia solves cubic equations

1545Square roots of negative numbers

1557Recorde introduces the equals sign

1565Goldbach states famous conjecture

1614Napier invents logarithms

1614Briggs uses base 10 logarithms

1621Harriot introduces the inequality signs

1630Oughtred invents the slide rule

1637Descartes creates analytic geometry

1641Descartes’ Geometrie was published

1654Pascal and Fermat discuss theory of probability in their correspondence

1655Wallis introduces the symbol for infinity

1660Fermat leaves last theorem

1665Newton invents calculus

1669Barrow discovered the general solution for the tangent line to a curve

1675Leibniz invents calculus

1696L’Hopital wrote the first text on differential calculus

1715Brook Taylor’s published account of polynomial approximations of transcental functions

1742Goldbach states famous conjecture

1748Agnesi writes Foundations of Analysis

1755Euler shows that ePi i + 1 = 0 that epi i +1 = 0

1770Lambert proves pi is irrational

1773Saccheri writes Euclid Freed of Every Flaw

1797Lagrange proved the Mean Value Theorem

1814Argand graphs imaginary numbers

1828Gauss determines the convergence of infinite series

1830Galois writes agout group theory

1842Lovelace describes how to program Babbages “Analytical Engine”

1854Riemann creates elliptic geometry

1854Cayley uses matrices in solving equations

1858Mobius strip is discovered

1888Kovalevski is the first woman to earn a doctorate in mathematics

1895Cantor creates transfinite numbers

1905Einstein publicly formulated his theory on relativity

1910Whithead and Russell write Principia Mathematica

1919Alice Hamilton is Harvard’s first female professor

1931Godel publishes “incompleteness” theorems

1942ENIAC, the first electronic computer is invented

1974Mrs. Greminger became a mathematics instructor at Valle High School

1975Bill Gates started his computer company Microsoft

1976Four color map problem is solved

1998Mrs. Moll became a mathematics instructor at Valle High School