Ultra-short pulses in linear and nonlinear media

Ultradiscrete Plücker Relation Specialized for Soliton Solutions

Ultradiscretization of a solvable two-dimensional chaotic map associated with the Hesse cubic curve

Umbral Calculus, Difference Equations and the Discrete Schroedinger Equation

Unfolding of singularities and differential equations

Unidirectional Propagation of an Ultra-Short Electromagnetic Pulse in a Resonant Medium with High Frequency Stark Shift

Unified algebraic Bethe ansatz for two-dimensional lattice models

Unified Approach to KdV Modulations

Uniform semiclassical trace formula for U(3) --> SO(3) symmetry breaking

Unifying scheme for generating discrete integrable systems including inhomogeneous and hybrid models

Unifying structures in quantum integrable systems

Unique continuation for discrete nonlinear wave equations

Univalent functions and integrable systems

Universal character and q-difference Painlevé equations with affine Weyl groups

Universal functions and exactly solvable chaotic systems

Universal R operator with deformed conformal symmetry

Universal R operator with Jordanian deformation of conformal symmetry

Universal R-matrix as integral operator

Universal Whitham hierarchy, dispersionless Hirota equations and multi-component KP hierarchy

Universality for the focusing nonlinear Schroedinger equation at the gradient catastrophe point: Rational breathers and poles of the tritronquee solution to Painleve I