Functions of a Complex Variable Functions of complex variables Difference and Functional Equations Dynamical Systems and Ergodic Theory Functional Analysis Functional analysis Functional equations Mathematics Operator Theory Operator theory Systems Theory, Control Difference equations Differentiable dynamical systems Differential equations Dynamics Ergodic theory Integral Transforms, Operational Calculus Integral transforms Operational calculus Ordinary Differential Equations Several Complex Variables and Analytic Spaces System theory Systems theory