Editing Frans van Schooten (section)

==Life==
Van Schooten's father, {{Ill|Frans van Schooten Senior|nl|Frans van Schooten Sr.}} was a professor of mathematics at the [[University of Leiden]], having [[Christiaan Huygens]], [[Johann van Waveren Hudde]], and [[René de Sluze]] as students.<ref>Van Berkel, K., Van Helden, A., & Palm, L. C. (Eds.). (1999). The history of science in the Netherlands: Survey, themes and reference. Brill: 51</ref>

Van Schooten met Descartes in 1632 and read his ''Géométrie'' (an appendix to his ''Discours de la méthode'') while it was still unpublished.<ref>Van Berkel, K., Van Helden, A., & Palm, L. C. (Eds.). (1999). The history of science in the Netherlands: Survey, themes and reference. Brill: 373</ref> Finding it hard to understand, he went to France to study the works of other important mathematicians of his time, such as [[François Viète]] and [[Pierre de Fermat]]. Frans van Schooten returned home to [[Leiden]] in 1643 to assist his father and, two years later, inherited his father's position as professor at Leiden's Engineering School. One of his most important pupils at this time was Huygens.

The pendant marriage portraits of him and his wife Margrieta Wijnants were painted by [[Rembrandt]] and are kept in the [[National Gallery of Art]]:<ref>[https://www.nrc.nl/nieuws/2018/11/06/ontdekking-kunsthistoricus-leidse-hoogleraar-wiskunde-en-echtgenote-op-portretten-van-rembrandt-a2754090 Discovery of portraits of Leiden professor and his wife] in [[NRC Handelsblad|NRC]], 6 November 2018</ref>
<gallery>
File:Rembrandt 229.jpg|''Portrait of a Gentleman with a Tall Hat and Gloves''
File:Rembrandt Harmensz. van Rijn 107.jpg|''Portrait of a Lady with an Ostrich-Feather Fan''
</gallery>