chronological order of mathematicians
-800: Budhayana -750: Manava -600: Thales -580: Apastamba -520: Pythagoras -490: Panini -450: Hippocrates -400: Plato -350: Aristotle -300: Euclid -180: Katyayana - 100: Posidonius -------------------------------------------------------------------------------------------------------------------------- 1: Geminus 120: Ptolmey 150: Yavanesvara 320: Papus 460: Tsu 500: Aryabhata I 530: Yativrsabha 550: Varahamihira 625: Brahmagupta