|
|
|
| Kronecker symbol — | ( | a n |
) | , where a and n are any integers, is an extension of the Jacobi symbol, |
by adding the following rules:
| ( | a 2 |
) | = | ( | 2 a |
) | for odd a, and | ( | a 2 |
) | = 0 for even a |
| ( | a -1 |
) | = | { |
-1 if a<0, |
| ( | a 0 |
) | = | { |
1 if a=±1, |
Mathworld: Kronecker Symbol
Wikipedia: Kronecker symbol
Euler's Criterion — a way to tell if a number is a quadratic residue (mod p)
Legendre symbol — ( a
p) , where a is any integer, and p is an odd prime
Jacobi symbol — ( a
n) , where a is any integer, and n is a positive integer greater than 2, an extension of the Legendre symbol.
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