Linear system
Physical system satisfying the superposition principle / From Wikipedia, the free encyclopedia
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This article is about the systems theory concept. For the linear algebra concept, see System of linear equations. For the algebraic geometry concept, see Linear system of divisors. For the tactical formation, see Line (formation).
In systems theory, a linear system is a mathematical model of a system based on the use of a linear operator. Linear systems typically exhibit features and properties that are much simpler than the nonlinear case. As a mathematical abstraction or idealization, linear systems find important applications in automatic control theory, signal processing, and telecommunications. For example, the propagation medium for wireless communication systems can often be modeled by linear systems.
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