What year did this stuff happen...(mathematics)?

1 Newton invents calculus


2 Tartaglia solves cubic equations


3 Mobius strip is discovered


4 Galois writes about group theory


5 Whitehead and Russel write "Principia Mathematica"


6 Archimedes determines formulas for the area and volume of a sphere


7 Lambert proves pi is irrational


8 Oughtred invents the slide rule


9 Euclid writes "Elements"


10 Four-color map problem is solved


11 Stevin introduces decimals


12 Goldbach states famous conjecture


13 Fermat leaves last theorem


14 Descartes creates analytic geometry


15 Napier invents logarithms


16 Appollonius studies conic sections


17 Wallace introduces the symbol for infinity (sideways 8)


18 Agnesi writes "Foundation of analysis"


19 Al-Khowarizmi uses zero


20 Argand graphs imaginary numbers


21 Rudolff introduces the radical sign


22 Riemann creates elliptic geometry


23 Eratosthenes determines the circumference of Earth


24 Lovelace describes how to program Baggage's "Analytical Engine"


25 Recorde introduces the equals sign


26 Euler shows the e xi + 1 = 0


27 ENIAC, the first electronic computer, is invented


28 Pascal and Fermat discuss theory of probability in their correspondence


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


30 Pythagoreans discover irrational numbers


31 Saccheri writes " Euclid freed of every flaw"


32 Godel publishes "incompleteness" theorems


33 Leibniz invents calculus


34 Cantor creates transfinite numbers


35 Harriot introduces the inequality signs


36 Gauss determines the convergence of infinite series





thank you!|||Have you considered......I don't know.....searching the Internet?


Or, even better, consulting Wikipedia?





EDIT:


Try this: http://en.wikipedia.org/wiki/Timeline_of鈥?/a>