Kronecker Delta and Heaviside Step Functions

δ(m, n) Returns 1 if m = n, otherwise, returns 0. (To type δ, press d [Ctrl] g.)

Φ(x) Returns 0 for negative values of x, 1 for positive values of x, and .5 when x is 0. (To type Φ, press F [Ctrl] g.)

Arguments:

Notes: