Pythagoras of Samos ca. 570 BC to ca. 490 BC (https://plato.stanford.edu/entries/pythagoras/)
Plato of Athens ca. .428 BC to 347 BC (https://www.history.com/topics/ancient-history/plato)
Euclid of Alexandria ca. 325 BC to ca. 265 BC (https://mathshistory.st-andrews.ac.uk/Biographies/Euclid/)
Archimedes of Syracuse 287 BC to 212 BC (https://mathshistory.st-andrews.ac.uk/Biographies/Archimedes/)
Eratosthenes of Cyrene ca. 276 BC to ca. 194 BC (https://mathshistory.st-andrews.ac.uk/Biographies/Eratosthenes/)
Diophantus of Alexandria ca. 200 to ca. 284 (https://mathshistory.st-andrews.ac.uk/Biographies/Diophantus/)
René Descartes 1596 to 1650 (https://mathshistory.st-andrews.ac.uk/Biographies/Descartes/)
Pierre de Fermat 1601 to 1665 (https://mathshistory.st-andrews.ac.uk/Biographies/Fermat/)
Isaac Newton 1643 to 1727 (https://mathshistory.st-andrews.ac.uk/Biographies/Newton/)
Leonhard Euler 1707 to 1783 (https://mathshistory.st-andrews.ac.uk/Biographies/Euler/)
Carl Friedrich Gauss 1777 to 1855 (https://mathshistory.st-andrews.ac.uk/Biographies/Gauss/)
Niels Henrik Abel 1802 to 1829 (https://mathshistory.st-andrews.ac.uk/Biographies/Abel/)\
Évariste Galois 1811 to 1832 (https://mathshistory.st-andrews.ac.uk/Biographies/Galois/)
Georg Cantor 1845 to 1918 (https://mathshistory.st-andrews.ac.uk/Biographies/Cantor/)
Srinivasa Ramanujan 1887 to 1920 (https://mathshistory.st-andrews.ac.uk/Biographies/Ramanujan/)