Proofs of Fermat's little theorem
This article collects together a variety of proofs of Fermat's little theorem, which states that a p ≡ a ( mod p ) {\displaystyle a^{p}\equiv a{\pmod {p}}} for every prime number p and every integer a (see modular arithmetic). == Simplifications == Some of the proofs of Fermat's little theorem given below depend on two simplifications.
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