The problem of critical inclination combined with a resonance in mean motion in artificial satellite theory
The problem of distinguishing between a center and a focus for nilpotent and degenerate analytic systems
The Problem of Positive Kolmogorov-Sinai entropy for the Standard map
The Quasi-Additivity Law in Conformal Geometry
The quasi-periodic stability condition (the KAM theorem) for partially-integrable systems
The random case of Conley's theorem
The random case of Conley's theorem: II. The complete Lyapunov function
The random case of Conley's theorem: III. Random semiflow case and Morse decomposition
The rate of convergence of new Lax-Oleinik type operators for time-periodic positive definite Lagrangian systems
The ratio set of the harmonic measure of a random walk on a hyperbolic group
The Real 3x+1 Problem
The real analytic Feigenbaum-Coullet-Tresser attractor in the disk
The Recollapse Problem of Closed Isotropic Models in Second Order Gravity Theory
The recurrence time for ergodic systems of infinite measures
The Renormalization Method and Quadratic-Like Maps
The Repetition Property for Sequences on Tori Generated by Polynomials or Skew-Shifts
The Replicator Equation as an Inference Dynamic
The reverse engineering problem with probabilities and sequential behavior: Probabilistic Sequential Networks
The rigidity problem for analytic critical circle maps
The Rokhlin lemma for homeomorphisms of a Cantor set