# Concept derivation guides

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Concept guide



## [The three-valued Legendre symbol from squares](/en/derivations/derivation-mko-legendre-symbol-01/?from=%2Fen%2Fderivations%2F%3Fq%3Dmko-legendre-symbol)

Modulo 7 the symbol on 0,1,2,3,4,5,6 is respectively 0,1,1,-1,1,-1,-1.

Legendre symbol

derivation-mko-legendre-symbol-01





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