Grégoire de Saint-Vincent
Grégoire de Saint-Vincent (French pronunciation: [ɡʁeɡwaʁ də sɛ̃ vɛ̃sɑ̃]) - in Latin : Gregorius a Sancto Vincentio, in Dutch : Gregorius van St-Vincent - (8 September 1584 Bruges – 5 June 1667 Ghent) was a Flemish Jesuit and mathematician. He is remembered for his work on quadrature of the hyperbola. He is also known as Gregorio a San Vincente.
Grégoire gave the "clearest early account of the summation of geometric series.": 136 He also resolved Zeno's paradox by showing that the time intervals involved formed a geometric progression and thus had a finite sum.: 137