a-not-b error ambient space andrey kolmogorov applied mathematics artificial life biology biomechanics butterfly effect calculus of variations cantor set chaos chaos theory cognition cognitive science complex complex system complex systems computer control theory difference differential digital object identifier dmitri anosov dynamical system dynamicism electronic circuit embodied embedded cognition equations of motion equilibrium point ergodic theory evolutionary computation feedback fourier transform functional analysis gingerbreadman map halo orbit invariant measure linear system list of types of systems theory lorenz attractor manifold mathematical analysis mathematical model mathematics mechanics nature nonlinear system operator oscillation partial differential equation people in systems and control postcognitivism psychology randomness recurrent neural network science simulation society state space stefan banach stephen smale stock and flow superposition principle system system dynamics tim van gelder time vector space vito volterra vladimir arnold