In dictionaries:
Time-invariant system
In control theory, a time-invariant system has a time-dependent system function that is not a direct function of time.
Linear time-invariant system
In system analysis, among other fields of study, a linear time-invariant system is a system that produces an output signal from any input signal subject to the constraints of linearity and time-invariance; these terms are briefly defined in the overview below.
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