Preprint: AI models were close forecasting heat demand in two German networks
Chronos-2 had lower overall error, while TabPFN-TS produced uncertainty intervals closer to their 80% target.
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A mathematical threshold links stability to positive-curvature metrics
Preprint says a shifted stability measure can identify positive scalar curvature—and, above a key boundary, a unique constant-curvature Kähler metric.
Preprint: AI mapping finds just 10% of Nice’s suburban street network meets quality criteria
Street View images were used to compare vegetation, sidewalks and pedestrian-accessible entrances across 110.9 km of mapped streets.
Preprint reports fourfold higher single-atom detection with a nanoscale lens
A GaN waveguide was modeled and tested as a near-field optical lens, but the result comes from one alignment-sensitive laboratory setup.
Computer model handles changing-stiffness plates, but distorted meshes trip some versions
Across five computational cases, two virtual-element formulations retained accuracy, while standard stabilization failed in some distorted-mesh tests.
Preprint finds sharp thermodynamic peak in hot gluon matter
A pressure-constrained model follows lattice behavior across deconfinement but differs from independent specific-heat estimates around the peak.
Preprint finds one graph measure is never more than twice another
The result links broadcast domination and multipacking, and gives a factor-two approximation for finding a large multipacking.
Preprint Shows How a Curvature Flow Can Select One Shape at Infinity
A mathematical theorem says continuous negative boundary data determine a unique smooth convex solution, while a normalized inverse curvature flow converges to it under stated conditions.
Preprint Finds Narrow Routes to Fair Sharing as Items Arrive
A theoretical study identifies online TEF1 cases and sets a tight 1/n ceiling on the temporal maximin-share guarantee for additive goods.
Preprint links native defects to α-MnO₂’s electronic and optical behavior
Calculations point to strong donor–acceptor compensation and direction-dependent light response, but not to a settled carrier type.
Preprint says strict conditions force a shrinking Ricci soliton into a flat-and-spherical product
A theorem for a narrowly defined class concludes that the space is isometric to R² × Sⁿ⁻²; the work is a mathematical proof, not an empirical study.
Preprint maps eight possible forms of agency for advanced AI
A conceptual framework separates legal questions from moral ones without establishing that any AI system qualifies as either.
Preprint reports less forgetting in a lightweight AI test of changing art styles
FedCurv-DR posted higher accuracy and better retention than FedAvg on a simulated WikiArt benchmark, but the clients were synthetic and the fairness findings were inconclusive.
Preprint reports conditional stability for delayed force-feedback robot control
A mathematical analysis and computer simulation explore a wave-based link for nonlinear master and slave manipulators, but provide no evidence from human operators or physical robots.
Preprint finds an exact boundary for critical graph families
For bipartite H and k at least 5, finiteness occurs exactly when H is 2P2-free; the study also gives finite subclasses, infinite constructions and an algorithmic consequence.
Preprint proposes a symmetry-agnostic test for stellarator confinement
The approach looks for a closed orbit-selected drift surface rather than constant local action, with model and trajectory tests supporting the idea in selected cases.
Preprint finds no single winner as time-series data shifts
DQeND led in incremental tests and abrupt location drift, while ELECTS performed best when class composition changed abruptly.
Preprint uses quantum-state geometry to bound the entangled part of a mixed state
An analytic study links the Best Separable Approximation to radial distances from the maximally mixed state and derives a separate result for two-qubit systems.
Preprint sets out a unique grid-based way to break down bipartite graphs
The formal framework divides each graph in scope into atomic blocks and links the pieces to maximum matchings, independent sets and a characteristic called m.
Preprint: Smaller model reports gains on seven time-series benchmarks
DecoVAE separates trend from seasonality and reports improved forecast scores alongside lower computing and memory demands in selected tests.