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Related papers: Saturated ideals from Laver collapses

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Motivated by the proof of Rump of a conjecture of Gateva-Ivanova on the decomposability of square-free solutions to the Yang-Baxter equation, we present several other decomposability theorems based on the cycle structure of a certain…

Exactly Solvable and Integrable Systems · Physics 2022-12-15 S. Ramírez , L. Vendramin

In this article, we introduce and study accelerated Landweber methods for linear ill-posed problems obtained by an alteration of the coefficients in the three-term recurrence relation of the \nu-methods. The residual polynomials of the…

Numerical Analysis · Mathematics 2012-12-21 Wolfgang Erb

We prove a logical implication between two old conjectures stated by Bapat and Sunder about the permanent of positive semidefinite matrices. Although Drury has recently disproved both conjectures, this logical implication yields a…

Rings and Algebras · Mathematics 2025-08-04 Léo Pioge , Kamil K. Pietrasz , Benoit Seron , Leonardo Novo , Nicolas J. Cerf

A $\sigma$-ideal $\cal{I}$ on a set $X$ is supersaturated if for every family $\cal{F}$ of $\cal{I}$-positive sets with $|\cal{F}| < \mathrm{add}(\cal{I})$, there exists a countable set that meets every set in $\cal{F}$. We show that many…

Logic · Mathematics 2021-07-01 Ashutosh Kumar , Dilip Raghavan

In this note, we give some new families of two-stage spaces for which the torus rank conjecture is affirmed.

Algebraic Topology · Mathematics 2025-08-19 Yanlong Hao , Xiugui Liu , Qianwen Sun

We verify that the descent maps provided by Langlands's Conjugacy Conjecture do satisfy the continuity condition necessary for them to be effective. Thus Langlands's conjecture does imply the existence of canonical models. This replaces an…

alg-geom · Mathematics 2021-01-19 J. S. Milne

We study integrable models in the context of the recently discovered Gauge/YBE correspondence, where the Yang-Baxter equation is promoted to a duality between two supersymmetric gauge theories. We study flavored elliptic genus of 2d…

High Energy Physics - Theory · Physics 2015-09-30 Masahito Yamazaki , Wenbin Yan

Some models of combinatorial principles have been obtained by collapsing a huge cardinal in the case of the successors of regular cardinals. For example, saturated ideals, Chang's conjecture, polarized partition relations, and transfer…

Logic · Mathematics 2022-07-12 Kenta Tsukuura

We prove that a large family of graphs which are decomposable with respect to the modular decomposition can be reconstructed from their collection of vertex-deleted subgraphs.

Combinatorics · Mathematics 2012-02-28 Robert Brignall , Nicholas Georgiou , Robert J. Waters

We provide a theoretical justification for the existence of fourth family fermions of the Standard Model by showing that in a novel form of spontaneous $CP$ breaking, fourth family is inevitable. This requires that fermions of third and…

High Energy Physics - Phenomenology · Physics 2018-05-25 Gauhar Abbas

The recent work of Papyan, Han, & Donoho (2020) presented an intriguing "Neural Collapse" phenomenon, showing a structural property of interpolating classifiers in the late stage of training. This opened a rich area of exploration studying…

Machine Learning · Computer Science 2022-02-18 Like Hui , Mikhail Belkin , Preetum Nakkiran

We show that the pseudoconcave holes of some naturally arising class of manifolds, called hyperconcave ends, can be filled in, including the case of complex dimension 2 . As a consequence we obtain a stronger version of the compactification…

Complex Variables · Mathematics 2007-06-23 George Marinescu , Tien-Cuong Dinh

Question when rectangle can be tiled with similar copies of rectangles witch quetient of sides quadratic irrationalities. New proof of one part F. Sharov's theorem. Other close result.

Combinatorics · Mathematics 2017-11-28 Pavel Ryabov

Eight different refinements of trapped surfaces are proposed, of three basic types, each intended as potential stability conditions. Minimal trapped surfaces are strictly minimal with respect to the dual expansion vector. Outer trapped…

General Relativity and Quantum Cosmology · Physics 2011-03-28 Sean A. Hayward

We present an improved incremental selection algorithm of the selection algorithm presented in [1] and prove all the selected conjectures.

Artificial Intelligence · Computer Science 2025-11-04 Jovial Cheukam Ngouonou , Ramiz Gindullin , Claude-Guy Quimper , Nicolas Beldiceanu , Remi Douence

In this paper, we extend the theory of parabolic implosion in complex dimension 2 to the case of holomorphic maps tangent to the identity at order 2. We investigate the bifurcation phenomena that occur when a fully parabolic fixed point is…

Dynamical Systems · Mathematics 2026-03-31 Matthieu Astorg , Lorena López-Hernanz , Jasmin Raissy

We give an example of iteration of length omega of (<kappa)-complete kappa^+-cc forcing notions with the limit collapsing kappa^+. The construction is decoded from the proof of Shelah [Proper and Improper Forcing, Appendix, Theorem 3.6(1)].

Logic · Mathematics 2018-08-07 Andrzej Roslanowski

In this paper, we investigate the geometries associated with 3-forms of various orbital types on a symplectic 6-manifold. We demonstrate that certain unstable 3-forms, which naturally emerge from specific degenerations of Calabi-Yau…

Differential Geometry · Mathematics 2025-03-18 Teng Fei

In computational inverse problems, it is common that a detailed and accurate forward model is approximated by a computationally less challenging substitute. The model reduction may be necessary to meet constraints in computing time when…

Methodology · Statistics 2018-02-14 Daniela Calvetti , Matthew M. Dunlop , Erkki Somersalo , Andrew M. Stuart

Recursive retraining of generative models poses a critical representation challenge: when synthetic outputs are curated based on a fixed reward signal, the model tends to collapse onto a narrow set of outputs that over-optimize that…

Machine Learning · Computer Science 2026-05-11 Ali Falahati , Mohammad Mohammadi Amiri , Kate Larson , Lukasz Golab