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We present a formalization of convex polyhedra in the proof assistant Coq. The cornerstone of our work is a complete implementation of the simplex method, together with the proof of its correctness and termination. This allows us to define…

Logic in Computer Science · Computer Science 2018-08-14 Xavier Allamigeon , Ricardo D. Katz

In sections 1 and 2 we follow our online talk at the 21st Geometrical Seminar (Beograd, Serbia) on June 30, 2022 by giving a survey of the formality problem for manifold with special holonomy and exposing recent results by M. Amann and the…

Differential Geometry · Mathematics 2023-08-08 Iskander A. Taimanov

We present a universal construction of Diophantine equations with bounded complexity in Isabelle/HOL. This is a formalization of our own work in number theory. Hilbert's Tenth Problem was answered negatively by Yuri Matiyasevich, who showed…

Logic in Computer Science · Computer Science 2025-09-30 Jonas Bayer , Marco David

While effective resolution of Thue equations has been well understood since the work of Baker in the 1960s, similar results for norm-form equations in more than two variables have proven difficult to achieve. In 1983, Vojta was able to…

Number Theory · Mathematics 2022-11-07 Prajeet Bajpai

Recently introduced ''fuzzy sphere'' method has enabled accurate numerical regularizations of certain three-dimensional (3D) conformal field theories (CFTs). The regularization is provided by the non-commutative geometry of the lowest…

Statistical Mechanics · Physics 2025-07-25 Cristian Voinea , Ruihua Fan , Nicolas Regnault , Zlatko Papić

We provide a proof of effective uniformization for nearly round 2-spheres, utilizing an identity related to the third-order differential of the conformal factor. This identity is connected to the geometry of the embedded spacelike surface…

Differential Geometry · Mathematics 2024-12-30 Pengyu Le

The problem of packing equal spheres in a spherical container is a classic global optimization problem, which has attracted enormous studies in academia and found various applications in industry. This problem is computationally…

Computational Geometry · Computer Science 2023-05-18 Jianrong Zhou , Shuo Ren , Kun He , Yanli Liu , Chu-Min Li

We present AutoformBot, a multi-agent system for building an Autoformalized Textbook Library At Scale (Atlas) in Lean 4. AutoformBot orchestrates thousands of LLM agents, equipped with formal verification tools, dependency-aware task…

Artificial Intelligence · Computer Science 2026-05-29 Ahmad Rammal , Niket Patel , Fabian Gloeckle , Amaury Hayat , Julia Kempe , Remi Munos , Charles Arnal , Vivien Cabannes

Enterprise modeling deals with the increasing complexity of processes and systems by operationalizing model content and by linking complementary models and languages, thus amplifying the model-value beyond mere comprehensible pictures. To…

Software Engineering · Computer Science 2022-03-29 Victoria Döller

We resolve a longstanding open problem by reformulating the Grassmannian fusion frames to the case of mixed dimensions and show that this satisfies the proper properties for the problem. In order to compare elements of mixed dimension, we…

Functional Analysis · Mathematics 2019-11-14 Peter G. Casazza , John I. Haas , Joshua Stueck , Tin T. Tran

We develop an analogue for sphere packing of the linear programming bounds for error-correcting codes, and use it to prove upper bounds for the density of sphere packings, which are the best bounds known at least for dimensions 4 through…

Metric Geometry · Mathematics 2012-03-15 Henry Cohn , Noam Elkies

By introducing a new averaged quantity with a fast decay weight to perform Sideris's argument (Commun Math Phys, 1985) developed for the Euler Equations, we extend the formation of singularities of classical solution to the 3D Euler…

Analysis of PDEs · Mathematics 2018-11-20 Hai-Liang Li , Yuexun Wang

As a seemingly self-explanatory task, problem-solving has been a significant component of science and engineering. However, a general yet concrete formulation of problem-solving itself is missing. With the recent development of AI-based…

Artificial Intelligence · Computer Science 2025-05-08 Qi Liu , Xinhao Zheng , Renqiu Xia , Xingzhi Qi , Qinxiang Cao , Junchi Yan

We consider discretized two-dimensional PDE-constrained shape optimization problems, in which shapes are represented by triangular meshes. Given the connectivity, the space of admissible vertex positions was recently identified to be a…

Optimization and Control · Mathematics 2023-08-17 Roland Herzog , Estefanía Loayza-Romero

We study gauge hierarchy problem of the Standard Model (SM) not by introducing new physics at the electroweak scale but by utilizing gravitational frames, frames generated by conformal transformations, as a renormalization medium. The…

High Energy Physics - Phenomenology · Physics 2012-07-20 D. A. Demir

We construct various exact analytical solutions of the $SO(3)$ BMN matrix model that correspond to rotating fuzzy spheres and rotating fuzzy tori.These are also solutions of Yang Mills theory compactified on a sphere times time and they are…

High Energy Physics - Theory · Physics 2015-06-16 David Berenstein , Eric Dzienkowski , Robin Lashof-Regas

In the present work, we attempt to find a new class of solutions for the spherically symmetric perfect fluid sphere by employing the Homotopy Perturbation Method (HPM), a new tool via which the mass polynomial function facilitates to tackle…

General Relativity and Quantum Cosmology · Physics 2018-10-09 Debabrata Deb , Sourav Roy Chowdhury , Saibal Ray , Farook Rahaman

We present a new model for Yang-Mills theory on the fuzzy sphere in which the configuration space of gauge fields is given by a coadjoint orbit. In the classical limit it reduces to ordinary Yang-Mills theory on the sphere. We find all…

High Energy Physics - Theory · Physics 2008-11-26 Harold Steinacker , Richard J. Szabo

The ever-growing complexity of mathematical proofs makes their manual verification by mathematicians very cognitively demanding. Autoformalization seeks to address this by translating proofs written in natural language into a formal…

Computation and Language · Computer Science 2023-01-06 Garett Cunningham , Razvan C. Bunescu , David Juedes

An efficient integral equation based solver is constructed for the electrostatic problem on domains with cuboidal inclusions. It can be used to compute the polarizability of a dielectric cube in a dielectric background medium at virtually…

Computational Physics · Physics 2012-06-15 Johan Helsing , Karl-Mikael Perfekt
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