Física Ciencias Exactas Classical limit Discrete maps Distinguishability Ergodic hierarchy Lyapunov exponents Pesin theorem Statistical distance Astronomía Entropic dynamics Ergodic dynamics Gaussian ensembles Goe KS-entropy KS–entropy KS–time Kolmogorov-Sinai entropy Krieger’s theorem Logarithmic timescale Mixing Pekeris approximation Pekeris mapping Poincaré’s recurrence theorem Poles Quantum chaos Quantum ergodic hierarchy Quantum mixing Relativistic oscillators Schottky effect