Crowder size linked to shape and motion in polymer simulations
Preprint: Denser modeled crowding was associated with a more compact polymer, while the two solvent models showed contrasting diffusion and relaxation patterns.
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Preprint reports matrix theory match for selected graviton amplitudes
The arXiv study links a supersymmetric state count to gravity results in one charge chamber and a special plane-wave configuration, with clear limits.
Preprint Finds Sharp Path-Deletion Threshold in Directed Graphs
A proof confirms the k = 1 case of Mader’s conjecture and derives new arc-deletion results under related degree conditions.
Most corporate code repositories lack committed AI practice
Preprint: A four-level model placed 66.7% of 441 repositories at Level 1, while none reached Level 4.
AI training method scores better on harder questions about new facts
Preprint: A three-stage reinforcement-learning recipe was reported to improve a language model's performance on multi-source and reasoning questions while keeping direct fact recall comparable.
Preprint Reports Error-Mitigation Results Vary by Noise
Numerical tests reported lower mean losses under uniform synthetic noise, while a heavy-hex case using hardware PTMs showed no reported improvement.
Badminton AI learns to adapt shots and recover in self-play
Preprint: In a physics-based badminton simulator, self-play agents changed shots and recovery with the opponent, but the human comparison was only a limited sanity check.
Model reports higher virtual power plant profits with fast-response rules
Preprint: A four-case simulation reported higher modeled regulation scores and profits when a small virtual power plant used fast-response requirements.
EV virtual power plant model shows lower error in coupled tests
Preprint: A data-driven inverse-optimization method performed much better when operating constraints on individual resources were coupled.
Industrial linear model remains solvable at 2,000-plant scale
A Preprint reports that LSTN resolved 2,000 plants in minutes, while STN-60 min failed to converge within 2 hours at 20 plants.
Frequency-based tests expose weak points in grid-forming controls
This preprint proposes a dynamic-droop screen that separates grid-forming and grid-following models, while finding oscillations in some grid-forming configurations.
Chest X-ray AI Shows Better Transfer, but Exact Retrieval Falters
Preprint findings show higher NIH-to-CheXpert AUCs with BYOL initialization, alongside low exact-pair retrieval on OpenI.
Analysis finds two 16N spectra do not fit one shared weak-current model
Preprint: The spectra share a strong continuum, but a single common weak-current amplitude does not describe them together.
Preprint Assigns Unknotting Number 3 to Named 11-, 12- and 13-Crossing Knots
Other listed cases are narrowed to three or four, or get a conditional same-sign requirement if two changes suffice.
Dynamic-key encrypted controller stays stable in a computer test
Preprint: A mathematical analysis and one numerical example report stability and no overflow with changing quantization gains, while leaving physical-world performance untested.
Control designs aim to hide a network mode from compromised nodes
This arXiv preprint describes partial-measurement methods and illustrates them in one modeled 11-node network.
New travel model changes simulated outcomes through linked attributes
Preprint: Tested on Seoul and London travel data, the model kept predictive performance near standard benchmarks but altered simulated mode-share responses.
AI Model Combines CT Scans and Records to Classify ILD
A preprint study reports a small, non-significant edge over imaging-only REN, while average routing weights for CT and EHR data remain nearly even.
A three-dimensional lattice Hardy constant matches 1/4
Preprint: A proof on the three-dimensional lattice finds the same sharp coefficient as the continuous Hardy inequality and an explicit positive remainder.
AI study reports lower sycophancy after label-free training
Preprint: A reward built from a model’s own sampled answers was associated with lower sycophancy; the training signal used no ground-truth labels or preference annotations.