13 Father of Branch of Mathematics WHO changed the world. 1. Archemedes: Father of Mathematics, Archimedes was the greatest mathematician of his age. His contributions in geometry revolutionised the subject and his methods anticipated the integral calculus. He was a practical man who invented a wide variety of machines including pulleys and the Archimidean screw pumping device. 2. Euclid: Father of Geometry, Euclid was a Greek mathematician best known for his treatise on geometry: The Elements.