Portrait of Pierre de Fermat
. Rolland Lefebvre (1608–1677); portrait in Musée des Beaux-Arts de Narbonne; reproduction via source listed on Commons. Public domain (life-plus-100, pre-1931 U.S. publication) and faithful reproduction / PD-Art. Source and usage information on the linked Wikimedia file page. Source. Articles by others on the same topic
Pierre de Fermat (1601–1665) was a French lawyer and mathematician who is best known for his contributions to number theory and for Fermat's Last Theorem. Although he was not a professional mathematician and did not publish his work in the way that many of his contemporaries did, his insights and writings laid important groundwork for modern mathematics.