Unidirectional Pinning and Hysteresis of Spatially Discordant Alternans in Cardiac Tissue

Universal algebraic relaxation of fronts propagating into an unstable state

Universal computation with limited resources: Belousov-Zhabotinsky and Physarum computers

Universal shape law of stochastic supercritical bifurcations: Theory and experiments

Universal trapping scaling on the unstable manifold for a collisionless electrostatic mode

Universally-convergent Squared-operator Iteration Methods for Solitary Waves in General Nonlinear Wave Equations

Unstable gap solitons in inhomogeneous Schrodinger equations

Unstable manifolds and Schroedinger dynamics of Ginzburg-Landau vortices

Unstable recurrent patterns in Kuramoto-Sivashinsky dynamics

Unstaggered-staggered solitons in two-component discrete nonlinear Schrödinger lattices

Unsteady undular bores in fully nonlinear shallow-water theory

Upper threshold for stability of multipole-mode solitons in nonlocal nonlinear media

Use the information dimension, not the Hausdorff

Vacuum response to cosmic stretching: accelerated Universe and prevention of singularity

Validation and Calibration of Models for Reaction-Diffusion Systems

Validity of the Brunet-Derrida formula for the speed of pulled fronts with a cutoff

Validity of the linear marginal stability principle for monotonic fronts of the extended Fisher-Kolmogorov equation

Variational approximations for travelling solitons in a discrete nonlinear Schrödinger equation

Variational approximations in discrete nonlinear Schrödinger equations with next-nearest-neighbor couplings

Variational Approximations of Bifurcations of Asymmetric Solitons in Cubic-Quintic Nonlinear Schroedinger Lattices