Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun number theory 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 pif and only if iscongruent to 1modulo p.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named after Leonhard Euler (1707–1783), Swiss mathematician and physicist, who devised the criterion in 1748.
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