Euler's criterion

专有名词
中文释义

英文释义

专有名词
  1. A theorem which states that, given a positive integer a which is coprime to an odd prime number p, a is a quadratic residue of p if and only if a^((p-1)/2) is congruent to 1 modulo p.

词源

Named after Leonhard Euler (1707–1783), Swiss mathematician and physicist, who devised the criterion in 1748.
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