La Habra High School
Math History Timeline
Reformation
1517-1598 A.D.

Math History
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1557 Recorde publishes The Whetstone of Witte which introduces = (the equals sign) into mathematics. He uses the symbol "bicause noe 2 thynges can be moare equalle".
1572 Bombelli publishes the first three parts of his Algebra. He is the first to gives the rules for calculating with complex numbers.
1575 Maurolico publishes Arithmeticorum libri duo which contains examples of inductive proofs.
1591 Vičte writes In artem analyticam isagoge (Introduction to the analytical art), using letters as symbols for quantities, both known and unknown. He uses vowels for the unknowns and consonants for known quantities. Descartes, later, introduces the use of letters x, y ... at the end of the alphabet for unknowns.
1593 Van Roomen calculates p to 16 decimal places.
1595 Pitiscus becomes the first to employ the term trigonometry in a printed publication.

Links:
1500 to 1600
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