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Euler's criterion
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Mathematics
Area of mathematics
Number theory
Quadratic residue
Legendre symbol
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Words: 12
For an odd prime
p
and
p
∤
a
,
a
(
p
−
1
)
/2
≡
(
p
a
)
(
mod
p
)
.
(24)
Ancestors
(6)
Legendre symbol
Quadratic residue
Number theory
Area of mathematics
Mathematics
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