Fermat's Last Theorem is a theorem in number theory, originally stated by Pierre de Fermat in 1637 and proved by Andrew Wiles in 1995. The statement of the theorem involves an integer exponent n larger than 2.

Wiles's proof of Fermat's Last Theorem is a proof by British mathematician Andrew Wiles of a special case of the modularity theorem for elliptic curves. Together with Ribet's theorem, it provides a proof for Fermat's Last Theorem.

¦ noun Mathematics the theorem (proved in 1995) that if *n* is an integer greater than 2, the equation *x*^{n} + *y*^{n} = *z*^{n} has no positive integral solutions.

C19: named after the 17th-cent. French mathematician Pierre de *Fermat*.