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Showing 13429 results for "erick chandra" · Preprint
Mathematics Preprint PDF DOI

A torsion-intersection proof of perfect-cuboid nonexistence on 1,072 explicit master-tuple fibers

Rene Peschmann · 2026

Building on the genus-3 reduction $C_A : w^2 = \lambda^8 + A \lambda^4 + 1$ established in our companion paper (arXiv:2604.09328), we give an unconditional proof of the perfect-cuboid conjecture ("Con…

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Physics Preprint PDF DOI

Diffuse Gamma-ray Emission Around 4FGL J1626.0-4917

Ziwei Ou, Jie Wang · 2026

Extended gamma-ray sources provide significant information about particle propagation. 4FGL J1626.0-4917 was labeled as an unassociated source in 4FGL catalog without known counterparts at other wavel…

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Mathematics Preprint PDF DOI

Weighted Linearization of Vector Fields via a Formal Moser Trick

Arthur Lei Qiu · 2026

Many well-known theorems establish sufficient criteria for linearizability of a vector field in terms of the eigenvalues of its linear approximation. By attaching weights to coordinates so that some d…

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AI & Data Science Preprint PDF DOI

Length Value Model: Scalable Value Pretraining for Token-Level Length Modeling

Zhen Zhang, Changyi Yang, Zijie Xia, Zhen Yang, Chengzhi Liu, Zhaotiao Weng, Yepeng Liu, Haobo Chen, Jin Pan, Chenyang Zhao, Yuheng Bu, Alkesh Patel, Zhe Gan, Xin Eric Wang · 2026

Token serves as the fundamental unit of computation in modern autoregressive models, and generation length directly influences both inference cost and reasoning performance. Despite its importance, ex…

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Mathematics Preprint PDF DOI

Lagrangian reduction of symmetric discrete mechanical systems: a survey

Matias I. Caruso, Javier Fernandez, Cora Tori, Marcela Zuccalli · 2026

In this note we survey some of our results on the Lagrangian reduction of discrete-time mechanical systems (DMSs). It is intended as an introduction to the general ideas that we used in the reduction …

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Physics Preprint PDF DOI

Covariant quantization of the Einstein-Hilbert theory in first-order form

S. Martins-Filho · 2026

We present a covariant quantization of the first-order formulation of the Einstein-Hilbert theory using the path integral and BV formalisms. In this approach, the metric $g^{\mu\nu}$ and the connectio…

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Physics Preprint PDF DOI

Accurate distances of the Galactic spiral arms from dust-scattered X-ray emission of gamma-ray bursts

B. Vaia, I. Fornasiero, A. Tiengo, A. Bracco, V. Jelic, Z. Bosnjak, F. Pintore, P. Esposito · 2026

The details of the spiral structure of the Milky Way are still debated due to large uncertainties in the distance estimates obtained through the most common tracers. X-ray dust scattering rings produc…

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Physics Preprint PDF DOI

Investigating interstellar dust along the line of sight of GX 13+1 using different dust size distributions

B. Vaia, S.T. Zeegers, I. Abril-Cabezas, E. Costantini · 2026

Context. High-resolution X-ray spectroscopy offers a powerful tool to investigate the physical and chemical properties of dust grains, especially through the analysis of absorption edges of elements s…

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AI & Data Science Preprint PDF DOI

Reparameterization through Coverings and Topological Weight Priors

Maxim Beketov, Pavel Snopov · 2026

We generalise the reparameterization trick applied in variational autoencoders (VAEs) letting these have latent spaces of non-trivial topology - i.e. that of base manifolds covered with other ones, on…

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Computer Science Preprint PDF DOI

On the Hardness of Finding Temporally Connected Subgraphs of Any Size

Arnaud Casteigts, Christian Komusiewicz, Nils Morawietz · 2026

Temporal graphs are graphs whose edges are only present at certain points in time. Reachability in these graphs relies on temporal paths, where edges are traversed chronologically. A temporal graph th…

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AI & Data Science Preprint PDF DOI

BrickNet: Graph-Backed Generative Brick Assembly

Peter Kulits, Cordelia Schmid · 2026

We train a language model to generate LEGO-brick build sequences. While prior work has been restricted to discrete, voxel-like towers, we consider a much broader set of pieces, encompassing thousands …

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Physics Preprint PDF DOI

Probable Detection of a Cooler Gas Component in the Perseus Cluster with XRISM

Julian Meunier, Brian R. McNamara, Aurora Simionescu, Francois Mernier, Irina Zhuravleva, Congyao Zhang, Annie Heinrich, Julie Hlavacek-Larrondo, Frederick S. Porter, Benjamin Vigneron, John ZuHone, Elena Bellomi, Ian Drury, Megan E. Eckart, Ryuichi Fujimoto, Yutaka Fujita, Liyi Gu, Isamu Hatsukade, Yuto Ichinohe, Yoshiaki Kanemaru, Takao Kitaguchi, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Hironori Matsumoto, Kyoko Matsushita, Kostas Migkas, Ikuyuki Mitsuishi, Koji Mori, Hiroshi Nakajima, Hirofumi Noda, Anna Ogorzalek, Naomi Ota, Lior Shefler, Nhut Truong, Aysegul Tumer, Nagomi Uchida, Yuusuke Uchida, Shutaro Ueda · 2026

We present an analysis of the temperature structure of the Perseus cluster atmosphere using XRISM Resolve observations. The average temperature rises from 3.3 keV near the nucleus of NGC 1275 to 8 keV…

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AI & Data Science Preprint PDF DOI

Transferable SCF-Acceleration through Solver-Aligned Initialization Learning

Eike S. Eberhard, Viktor Kotsev, Timm Guthle, Stephan Gunnemann · 2026

Machine learning methods that predict initial guesses from molecular geometry can reduce this cost, but matrix-prediction models fail when extrapolating to larger molecules, degrading rather than acce…

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Physics Preprint PDF DOI

A rigorous quasipolynomial-time classical algorithm for SYK thermal expectations

Alexander Zlokapa · 2026

Estimating local observables in Gibbs states is a central problem in quantum simulation. While this task is BQP-complete at asymptotically low temperatures, the possibility of quantum advantage at con…

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Mathematics Preprint PDF DOI

Left modularity and extremality for (some) infinite lattices

Sota Asai, Osamu Iyama, Kaveh Mousavand, Charles Paquette · 2026

For some important families of complete infinite lattices, we study some generalizations of two fundamental notions which are mostly treated for finite lattices. Specifically, for well-separated $\kap…

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Mathematics Preprint PDF DOI

Explicit counting of ideals in number fields of arbitrary degree

Anton Fehnker · 2026

We implement methods from the geometry of numbers to give explicit estimates for the number of integral ideals in a number field. We pay particular attention to minimising the effect of the degree $n$…

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Physics Preprint PDF DOI

Duality of Hamiltonian and Lagrangian formulations for integrable systems

Pierandrea Vergallo, Mats Vermeeren · 2026

We introduce the concept of Hamiltonian potential variables to map Hamiltonian operators into symplectic operators in a dual space. This generalises the classical trick of switching to a potential var…

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AI & Data Science Preprint PDF DOI

Flexible Empowerment at Reasoning with Extended Best-of-N Sampling

Taisuke Kobayashi · 2026

This paper proposes a novel method that incorporates empowerment when reasoning actions in reinforcement learning (RL), thereby achieving the flexibility of exploration-exploitation dilemma (EED). In …

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Mathematics Preprint PDF DOI

On local integrability results for $p$-adic reductive groups

Cheng-Chiang Tsai · 2026

We present a short proof, based on local character expansions, of the celebrated theorem of Harish-Chandra about local integrability of complex characters of $p$-adic reductive groups. The proof gives…

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Physics Preprint PDF DOI

Structure and Large-Scale Kinematics of Young Stellar Populations in the NGC 6357 and NGC 6334 Giant Molecular Cloud Complex

Matthew S. Povich, Leisa K. Townsley, Patrick S. Broos, Aldair E. Bonilla, Giaky Nguyen, Carly Soos, Michael A. Kuhn, Simran S. Singh, Gordon P. Garmire · 2026

We map the three-dimensional structure and large-scale kinematics of the young stellar populations in the G352 giant molecular cloud (GMC) complex. In radio and infrared images, G352 appears as long f…

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