Linear systems 22 Linear system 6 Differential equations 5 Engineering 5 Linear operators 5 System analysis 5 Differential equations-- Analysis-- Mathematics 4 Iterative methods (Mathematics) 4 Signals 4 Systems 4 Control theory 3 Linear Systems 3 Mathematics 3 Matrices 3 Toeplitz operators 3 Algebras, Linear 2 Biophysical Phenomena 2 Chaotic behavior in systems 2 Data processing 2 Discrete-time systems 2 Hankel operators 2 Interpolation 2 Inverse problems (Differential equations) 2 Linear control systems 2 Mathematical models 2 Moment problems (Mathematics) 2 Polynomials 2 Schur functions 2 System theory 2 Wiener-Hopf operators 2