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2560 BCE
Great Pyramid of Giza completed
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280 BCE
Aristarchus of Samos is makes the hemispherical sundial or hemicycle
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Pascal discovers his theorem while only 16 years old
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Torricelli's Trumpet (aka Gabriel's Horn) is discovered by Evangelista Torricelli
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Fermat dies, leaving no record of his 'wonderful proof'
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William Jones introduces the symbol for pi
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Abraham DeMoivre publishes "Doctrine of Chances" and investigates mortality
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Lambert proves that pi is irrational
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Comte de Buffon uses a needle to estimate the value of pi
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Joseph Huddart invents the 3-armed protractor
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Morse transmits the first message using his code
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Kirkman poses the 15 schoolgirl problem
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Mobius and Listing in introduce the Mobius strip
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Peano proves a solid square is a curve (the space-filling curve)
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The Tower of Hanoi is invented by Edouard Lucas and sold as a toy
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Flatland is written by Edwin Abbott
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The Peano Axioms are presented
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Von Kach creates his snowflake curve
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The Fields Medal is first awarded
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Von Neumann and Morgenstren publish "Theory of Games and Economic Behavior"
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The Prisoner's Dilemma is formally identified by Melvin Dresher and Merill Flood.
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The Fibonacci Quarterly, a journal devoted to the number theory of the Fibonacci sequence, is founded
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The Ulam Spiral is discovered
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Rubik's Cube is invented
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Kenneth Appel and Wolfgang Haken prove the 4-color theorem
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Nash is awarded the Nobel Prize for Economics for his work on game theory
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The Eternity Puzzle is released commercially
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Jade Vinson discovers the world's first holyhedron specimen
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NUMB3RS hits American television