An arXiv preprint extends the topological Halmos-von Neumann framework to open abelian group bundles, connecting compactifications with dual sheaves, point spectra and dynamical systems while marking clear limits.
A theorem-based analysis links finite Kuramoto manifolds with the Ott-Antonsen and continuum descriptions, while restricting the result to a specific model, parameter range and family of trajectories.
A theoretical preprint reports Devaney chaos for some two-dimensional linear maps under weak topology, but a conflict between a Jordan-block theorem and its proof clouds one part of the classification.
The mathematical construction extends Sato-theoretic coordinates to a bi-infinite array, derives exact continuous and discrete flows, and identifies AKNS, GI, and lattice systems as reductions of ASDYM.
A mathematical preprint finds that the model’s global edge-indexed Euler product breaks down coefficient by coefficient, but finite-core determinants and height damping still yield exact local, pressure and spectral results.
A mathematical preprint studies a lacunary skew product whose function h is Holder continuous below exponent one but not Lipschitz, while its associated toral map fails bounded mean motion and C0-rigidity for every irrational alpha.
Mathematical constructions on the two-torus preserve area and show weak mixing while meeting a deviation bound without bounded mean motion or a circle-rotation skew-product form.
A new numerical direct-scattering method was tested on three modeled dNLSE wave fields, matching analytical scattering quantities in one benchmark and identifying 28 dark solitons in another.
This formal study uses no empirical sample; it linearizes the U-system, identifies KP and two-component KP structures in Grassmannian coordinates, and recasts constrained forms as AKNS and ASDYM.
A simulation study links time-varying interaction delays with intermittent flocking and fractal changes in collective order; under conservative delays, the same model showed rapid swings between strong and weak order.
A new arXiv preprint gives a positive answer to a partition question about sets of nice recurrence. The result is a theorem about abstract mathematical systems, not an experiment or a measured effect.
A numerical study of a one-dimensional shallow-water model found that a dissipative run produced a dominant soliton in each direction of propagation. The modeled crest-height ratio was about 3, above the study’s reported criterion of greater than 1.25.
A computational study tested ensembles of randomly constructed reservoir computers in three deterministic chaotic systems. It reported a roughly 25-step Hénon-map ensemble horizon and Lorenz 96 ensemble forecasts that remained successful for at least 2.5 Lyapunov times. Performance-weighted averaging outperformed plain averaging.
A mathematical preprint gives a positive answer to a question in ergodic theory: every free ergodic probability-measure-preserving action of a free group has an orbit-equivalent representative that is totally weak mixing. The result is existential and theoretical; it does not settle whether the representative can be made mixing.
A new arXiv preprint presents a mathematical framework for constructing generalized coherent states in quantum billiards. It projects a minimal-dispersion wave packet onto continued eigenstates and develops analytical and numerical routes for studying the result. The work remains a formal construction, with no independent validation of its accuracy or long-term behavior.
A new arXiv preprint reports that phase-space flux calculations closely tracked average flip rates in a simulated equal-mass, equal-arm double pendulum. The result supports a statistical prediction of event rates within the tested model, while leaving questions about regular motion, broader pendulum designs and higher energies.
A new arXiv preprint gives arithmetic proofs that the parabolic multiplicity at 0 is 1 for a quadratic polynomial and an entire map at primitive root-of-unity parameters. It extends the polynomial argument to unicritical maps of arbitrary degree, but some valuation patterns remain conjectural and one computer-assisted exceptional case is reported without computational details.