Time Invariant System

"A system is called "time invariant" if for any input signal x[n] and for any $ t_0 \epsilon \mathbb{R} $, the response to the shifted input is the shifted output." -Mimi Boutin

Time Variant System

A system is considered "time variant" if time shifting the input x[n] does not produce the same result as the output shifted by the same amount.

Alumni Liaison

Abstract algebra continues the conceptual developments of linear algebra, on an even grander scale.

Dr. Paul Garrett