The works of the 17th-century mathematician Pierre de Fermat engendered many theorems. '''Fermat's theorem''' may refer to one of the following theorems:
* Fermat's Last Theorem, about integer solutions to ''a''<sup>''n''</sup> + ''b''<sup>''n''</sup> = ''c''<sup>''n''</sup> * Fermat's little theorem, a property of prime numbers * Fermat's theorem on sums of two squares, about primes expressible as a sum of squares * Fermat's theorem (stationary points), about local maxima and minima of differentiable functions * Fermat's principle, about the path taken by a ray of light * Fermat polygonal number theorem, about expressing integers as a sum of polygonal numbers * Fermat's right triangle theorem, about squares not being expressible as the difference of two fourth powers
==See also== * List of things named after Pierre de Fermat
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Category:Set index articles on mathematics