Kronecker Delta Function

The Kronecker Delta Function is given by

From MATH213:

Definition 1: Kronecker delta

The Kronecker delta function is defined as the function from to given by

Theorem 2

For all functions ,

Theorem 2 shows how to decompose every function into a linear combination of impulse functions (i.e. is a basis for all DT functions.)

From CS370

They use a slightly different notation