Here is a sort of timeline that I made of mathematicians.
		Person              Born                   Died Charles Babbage December 26, 1791 October 18, 1871 Rene Descartes March 31, 1596 February 11, 1650 Leonardo Da Vinci April 15, 1452 May 2, 1519 Paul Erdos March 26, 1913 September 20, 1996 Isaac Newton  January 4, 1643 March 31, 1727 Galileo Galilei February 15, 1564 January 8, 1642 Virginia Ragsdale December 13, 1870 June 4, 1945 Carol Karp August 10, 1926 August 20, 1972 Leonhard Euler  April 15, 1707 September 18, 1783 Blaise Pascal June 19, 1623 August 19, 1662 Georg Cantor March 3, 1845 January 6, 1918 Grace Chisholm Young March 15, 1868 March 29, 1944 Leonardo Fibonacci Around 1170 Around 1250 Simon Stevin Around 1548 February 1620 Tycho Brahe December 14, 1546 October 24, 1601
	Person                                                Contribution Charles Babbage Babbage invented the computer. In 1820 he was elected a fellow of the Royal Society of Edinburgh. Rene Descartes René Descartes was a philosopher whose work, La géométrie, included his application of algebra to geometry from which we now have Cartesian geometry. Soon after he settled in Holland Descartes began work on his first major treatise on physics, Le Monde, ou Traité de la Lumičre. Leonardo Da Vinci Leonardo Da Vinci was an inventor and a painter. He made the Mona Lisa. Paul Erdos Erdös was proof for a classic theorem of number theory. However, basically Erdös was a solver of problems, not a builder of theories. The problems which attracted him most were problems in combinatorics, graph theory, and number theory. Isaac Newton He figured out gravity. He began his studies on law, but found that he figured out gravity. Galileo Galilei He invented the telescope. He then described an experiment using a pendulum to verify his property of inclined planes and used these ideas to give a theorem on acceleration of bodies in free fall. Virginia Ragsdale She made the Ragsdale Conjecture. Ragsdale was also a teacher. Carol Karp In 1964 she published a book on her research Languages with expressions of infinite length but she had hoped to write another work which would take her ideas considerably further. She was a teacher, she taught for several years. Leonhard Euler He was a philosopher. Euler served as a medical lieutenant in the Russian navy from 1727 to 1730. Blaise Pascal Pascal invented the first digital calculator. He worked on it for 3 years. From about this time Pascal began a series of experiments on atmospheric pressure. By 1647 he had proved to his satisfaction that a vacuum existed. Georg Cantor Cantor had a theory of the mumbers, and that there was something after or before infinity. Grace Chisholm Young Together William Young and Grace wrote 220 mathematical articles and several books. Between 1914 and 1916 she published work on the foundations of calculus under her own name that won the Gamble Prize from Girton College. Leonardo Fibonacci   He made the Fibonacci sequence. Simon Stevin Although he did not invent decimals, he did introduce their use in mathematics in Europe. Tycho Brahe Tycho is perhaps best known today for his theory of the solar system which is based on a stationary Earth round which the Moon and Sun revolve. He studied law at first.
				Reflection I really learned a lot about mathematics and mathematicians. I found that a lot of mathematicians didn't really get mathematics at first, but then they came to love it. I now find math not as bad as i thought it was, after i completed this project, i found that sometimes math can be fun, but still sometimes not. That's just my opinion though! I hope you have learned a lot about these wonderful people!
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