A generalization of the Gaussian sum. For and of opposite parity (i.e., one is even and the other is odd), Schaar's identity states
Schaar's identity can also be written so as to be valid for , with even.
A generalization of the Gaussian sum. For and of opposite parity (i.e., one is even and the other is odd), Schaar's identity states
Schaar's identity can also be written so as to be valid for , with even.
Weisstein, Eric W. "Schaar's Identity." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SchaarsIdentity.html