Chronological Order Essay, Research Paper
-399 pythagoreans discover irrational numbers
-240 Eratosthenes determines circumference of earth
-230 Archimedes determines fromulas for the area of a secton of a parabola formulas for the area of a section of a parabola
-200 Appollonius studies conic sections
-200 Euclid writes Elements
-100 Hipparchus develops the trig tables
825 Al-Khowarizmi uses Zero
1525 Rudolff introduces the radical sign
1535 Tartaglia solves cubic equations
1545 Square roots of negative numbers
1557 Recorde introduces the equals sign
1565 Goldbach states famous conjecture
1614 Napier invents logarithms
1614 Briggs uses base 10 logarithms
1621 Harriot introduces the inequality signs
1630 Oughtred invents the slide rule
1637 Descartes creates analytic geometry
1641 Descartes’ Geometrie was published
1654 Pascal and Fermat discuss theory of probability in their correspondence
1655 Wallis introduces the symbol for infinity
1660 Fermat leaves last theorem
1665 Newton invents calculus
1669 Barrow discovered the general solution for the tangent line to a curve
1675 Leibniz invents calculus
1696 L’Hopital wrote the first text on differential calculus
1715 Brook Taylor’s published account of polynomial approximations of transcental functions
1742 Goldbach states famous conjecture
1748 Agnesi writes Foundations of Analysis
1755 Euler shows that ePi i + 1 = 0 that epi i + 1 = 0
1770 Lambert proves pi is irrational
1773 Saccheri writes Euclid Freed of Every Flaw
1797 Lagrange proved the Mean Value Theorem
1814 Argand graphs imaginary numbers
1828 Gauss determines the convergence of infinite series
1830 Galois writes agout group theory
1842 Lovelace describes how to program Babbages “Analytical Engine”
1854 Riemann creates elliptic geometry
1854 Cayley uses matrices in solving equations
1858 Mobius strip is discovered
1888 Kovalevski is the first woman to earn a doctorate in mathematics
1895 Cantor creates transfinite numbers
1905 Einstein publicly formulated his theory on relativity
1910 Whithead and Russell write Principia Mathematica
1919 Alice Hamilton is Harvard’s first female professor
1931 Godel publishes “incompleteness” theorems
1942 ENIAC, the first electronic computer is invented
1974 Mrs. Greminger became a mathematics instructor at Valle High School
1975 Bill Gates started his computer company Microsoft
1976 Four color map problem is solved
1998 Mrs. Moll became a mathematics instructor at Valle High School