PINN tests point to different roles for precision and architecture
Preprint study: matched tests link alignment to some hard-convection recoveries, while FP64 mainly lowered error in selected runs.
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Microwave Amplifier Delivers Gain in Fields Above 1 Tesla
Preprint: A two-device experiment found more than 10 dB of gain above 1 tesla in near-parallel alignment, but nearly all explored settings produced no net gain by 20 millitesla in the perpendicular setup.
Mathematicians Extend the Range of Complete Non-Quadratic Hypersurfaces
Preprint: The paper reports Euclidean-complete examples across a wider parameter interval and three types for specified two-dimensional Calabi affine surfaces.
Preprint Reports Exact Dimension Law for the Three-Dimensional Veronese Curve
The theorem compares generic and tangent-special approximants and places a change in the dominant term at λ = 2/3.
Two-dimensional Oldroyd-B model remains well posed with large initial stress
Preprint reports global existence and uniqueness in two dimensions when stress diffuses and the initial conformation is nonnegative.
Claim-locked AI reports were far more repeatable in tests
Preprint: A system that bound each statistical claim to its source reached 98.5% fMRI reproducibility, versus 61.1% for a hybrid template.
Preprint reports lower AI help for relationship manipulation in tests
Under the primary GPT-4o-mini judging protocol, a two-stage gate recorded a 2.21% pooled harmful rate and a 93.04% pooled protective rate in synthetic conversations, with no real users or targets involved.
Models suggest twin signals from dark-matter halos around black holes
Preprint: A theoretical model projects linked gravitational-wave and radio signatures during a neutron-star and black-hole inspiral.
New theorem ties thin-set colorings to a formal bounding principle
Preprint: A formal proof over RCA_0 derives BΣ^0_{n+1} from RT^n_{<∞,ℓ} for every n and ℓ at least 1, while leaving stronger questions open.
New criteria identify when stationary Navier-Stokes solutions are zero
Preprint: Geometric criteria can imply that certain smooth, decaying stationary Navier-Stokes solutions in R3 are identically zero.
A galaxy can lose gas while its AGN keeps flickering
This preprint uses a single-galaxy simulation to suggest how rapid AGN flickering can coexist with slow gas depletion and star-formation quenching.
Video model maps moments and objects tied to driving-risk scores.
Preprint: CoRE turns changes in a coarse video-level prediction into direct estimates of the time regions and tracked entities that support it.
New sufficient test for generalized Alexander quandle admissibility
A preprint dated 26 Aug 2026 sets out the condition, checks one finite example and reports seven qualifying cases from a classification.
FPGA system reports lower job-runtime error, 17-fold speedup over AVX
Preprint: An arXiv study reports lower job-runtime error on three historical traces; a separate ALCF benchmark averaged a 17-fold speedup over AVX.
Bitcoin Signal Search Shows Positive Scores but Negative Net Sharpe
Preprint: A deterministic audit caught all 40 illegal templates and rejected none of 40 legal ones in a finite benchmark, while all 23 holdout runs had negative net Sharpe under primary costs.
J-lens Study Reports Higher AI Readout Scores With Energy Filtering
Preprint: In tests on Qwen3-8B, variants retaining the top 10% to 20% of positions by Jacobian energy had higher reported averages, while masking did not cleanly separate two readout modes.
Preprint finds exact dimension for a difficult number set
An arXiv preprint reports a Hausdorff dimension of 2/(τ+1) in the stated nonzero-shift setting, using a scale-sensitive game.
Robot-learning study finds listwise feedback can match pairwise methods
Preprint: In simulated robot tasks, listwise visual rankings were competitive overall, but results varied by task and random seed.
Exact schedulers solve all 35 tests and expose benchmark errors
A preprint reports that SAT and constraint programming proved optimality on all 35 cases, while a review found nine earlier schedules that violated the power constraint.
Model predicts optical signatures of a Hopf-link transition
A theoretical arXiv preprint also models a nonlinear Hall response with a specified symmetry-breaking term, but the results have not been tested in a material.