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Inspired by recent work of Kopparty-Moshkovitz-Zuiddam and motivated by problems in combinatorics and hypergraphs, we introduce the notion of the symmetric geometric rank of a symmetric tensor. This quantity is equal to the codimension of…

Algebraic Geometry · Mathematics 2023-03-31 Julia Lindberg , Pierpaola Santarsiero

In a previous paper [9], we proved the following singularity theorem applicable to cosmological models with a positive cosmological constant: if a four-dimensional spacetime satisfying the null energy condition contains a compact Cauchy…

General Relativity and Quantum Cosmology · Physics 2025-12-12 Gregory J. Galloway , Eric Ling

A symplectic, symmetric, second-order scheme is constructed for particle evolution in a time-dependent field with a fixed spatial step. The scheme is implemented in one space dimension and tested, showing excellent adequacy to experiment…

Computational Physics · Physics 2012-07-12 Alberto Ruzzon , Yves Elskens , Fabrice Doveil

We investigate (local) automorphisms of parabolic geometries that generalize geodesic symmetries. We show that many types of parabolic geometries admit at most one generalized geodesic symmetry at a point with non-zero harmonic curvature.…

Differential Geometry · Mathematics 2017-05-24 Jan Gregorovič , Lenka Zalabová

We obtain an analog of the prime number theorem for a class of branched covering maps on the $2$-sphere $S^2$ called expanding Thurston maps, which are topological models of some non-uniformly expanding rational maps without any smoothness…

Dynamical Systems · Mathematics 2024-04-11 Zhiqiang Li , Tianyi Zheng

In this work we study the general system of geodesic equations for the case of a massive particle moving on an arbitrary curved manifold. The investigation is carried out from the symmetry perspective. By exploiting the parametrization…

General Relativity and Quantum Cosmology · Physics 2019-06-05 N. Dimakis , Petros A. Terzis , T. Christodoulakis

Let $(M,g)$ be a simple Riemannian manifold with boundary and consider the geodesic ray transform of symmetric 2-tensor fields. Let the integral of $f$ along maximal geodesics vanish on an appropriate open subset of the space of geodesics…

Differential Geometry · Mathematics 2008-03-21 Venky Krishnan , Plamen Stefanov

We found a regularity of the behavior of primes that allows to represent both prime and natural numbers as infinite matrices with a common formation rule of their rows. This regularity determines a new class of infinite cyclic groups that…

General Mathematics · Mathematics 2007-05-23 Lubomir Alexandrov

Local symmetries of a non-expanding horizon has been investigated in the 1st order formulation of gravity. When applied to a spherically symmetric isolated horizon only a U(1) subgroup of the Lorentz group survives as residual local…

General Relativity and Quantum Cosmology · Physics 2015-05-18 Rudranil Basu , Ayan Chatterjee , Amit Ghosh

This paper aims to characterize rank-one arithmetic and locally symmetric metrics in the coarsely geometric setting using coarse-geometric commensurators. We provide a positive answer in general under the Hilbert-Smith conjecture and…

Geometric Topology · Mathematics 2024-12-11 Yanlong Hao

A construction of $W$-symmetries is given only in terms of the nonlocal fields (parafermions ${\ps}_{\al}$), which take values on the homogeneous space $G/U(1)^r$, where $G$ is a simply connected compact Lie group manifold (its accompanying…

High Energy Physics - Theory · Physics 2007-05-23 Xiang-Mao Ding , Pei Wang

We show that a totally geodesic submanifold of a symmetric space satisfying certain conditions admits an extension to a minimal submanifold of dimension one higher, and we apply this result to construct new examples of complete embedded…

Differential Geometry · Mathematics 2007-05-23 Claudio Gorodski

Let $E$ be a two-dimensional \'etale algebra over a non-Archimedean local field $K$ of characteristic zero. We show that the unitary group of a non-degenerate hermitian lattice over $E$ is generated by symmetries and rescaled Eichler…

Number Theory · Mathematics 2022-08-01 Simon Brandhorst , Tommy Hofmann , Sven Manthe

We prove a bound for the geodesic diameter of a subset of the unit ball in $\mathbb{R}^n$ described by a fixed number of quadratic equations and inequalities, which is polynomial in $n$, whereas the known bound for general degree is…

Algebraic Geometry · Mathematics 2012-09-27 Michel Coste , Seydou Moussa

For non-compact, locally symmetric moduli spaces M, the set of geodesics and the geometry of the boundary can be completely characterised using group theory. In particular, geodesics that asymptote to a given infinite distance boundary…

High Energy Physics - Theory · Physics 2025-08-27 Stephanie Baines , Veronica Collazuol , Bernardo Fraiman , Mariana Graña , Daniel Waldram

In an infinite-dimensional Teichm\"uller space, it is known that the geodesic connecting two points can be unique or not. In this paper, we study the situation on the geodesic in the universal asymptotic Teichm\"uller space $AT(\Delta)$. We…

Complex Variables · Mathematics 2015-06-30 Guowu Yao

We prove a local analogue of a theorem of J. Martinet about the absolute norm of the relative discriminant ideal of an extension of number fields. The result can be seen as a statement about 2-primary units. We also prove a similar…

Number Theory · Mathematics 2008-07-09 Supriya Pisolkar

We investigate the value distribution of holomorphic maps defined on one class of K\"ahler manifolds. With the very natural settings, we establish a Second Main Theorem which is of the similar form as ones of the classical Second Main…

Complex Variables · Mathematics 2022-05-19 Xianjing Dong , Peichu Hu

We prove in this note that local geometric uniqueness holds true without loss of regularity for Einstein equations coupled with a large class of matter models. We thus extend the Planchon-Rodnianski uniqueness theorem for vacuum spacetimes.…

Mathematical Physics · Physics 2011-09-06 David Parlongue

A notion of arithmetic similarity between number fields is defined by requiring equality of some arithmetic statistics over all but finitely many rational primes. The exceptional set is empty in all previously studied cases, but existing…

Number Theory · Mathematics 2025-05-05 Shaver Phagan