Operator Theory 8 Operator theory 8 System theory 6 Systems Theory, Control 6 Algebra 2 Dynamical Systems and Ergodic Theory 2 Dynamics 2 more ... Ergodic theory 2 Functions of a Complex Variable 2 Functions of complex variables 2 Linear and Multilinear Algebras, Matrix Theory 2 Matrix theory 2 Analysis 1 Analysis (Mathematics) 1 Computational Science and Engineering 1 Computer mathematics 1 Difference and Functional Equations 1 Difference equations 1 Differential equations 1 Functional Analysis 1 Functional analysis 1 Functional equations 1 Integral Transforms, Operational Calculus 1 Integral transforms 1 Mathematical Methods in Physics 1 Mathematical analysis 1 Number Theory 1 Number theory 1 Operational calculus 1 Ordinary Differential Equations 1 less ...