Timeline: Mathematics

• c. 585 BCE
  Time in which Thales of Miletus lived.
• c. 571 BCE - c. 497 BCE
  Life of Pythagoras of Samos; claim that "number" is the First Cause of existence and the soul is immortal.
• c. 190 BCE - c. 120 BCE
  Life of Hipparchus of Nicea, the ancient Greek mathematician, astronomer and geographer considered the greatest astronomer of antiquity and among the most impressive in world history
• 628 CE
  First use of the number zero proposed by Indian mathematician Brahmagupta.
• 14 Mar 1592 CE
  Ultimate Pi Day is observed as the greatest correspondence between calendar dates and the digits of pi since the introduction of the Julian calendar. The date is still observed as Pi Day.
• 8 Jan 1816 CE
  French mathematician, philosopher, and physicist Marie-Sophie Germain becomes the first woman to be awarded the grand prize by the Paris Academy of Sciences for her work on elasticity.