English
Etymology
quadratic|Quadratic refers to the square|squaring in the question addressed.
Noun
en-noun|sg=quadratic reciprocity|-
- numbertheory Mathematical theorem relating the Jacobi symbol <math>\left({a \over b}\right)</math> to the inverted <math>\left({b \over a}\right)</math>, essentially relating the question of whether a is a square modulo b to the opposite question of whether b is a square modulo a (or modulo the prime factors).
See also
Legendre symbol
Jacobi symbol
External links
pedialite
ru:quadratic reciprocity
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