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It was conjectured that multiplicity of a singularity is bi-Lipschitz invariant. We disprove this conjecture, constructing examples of bi-Lipschitz equivalent complex algebraic singularities with different values of multiplicity.

Algebraic Geometry · Mathematics 2021-09-20 Lev Birbrair , Alexandre Fernandes , J. Edson Sampaio , Misha Verbitsky

We define a relation that describes the ternary commutator for congruence modular varieties. Properties of this relation are used to investigate the theory of the higher commutator for congruence modular varieties.

Rings and Algebras · Mathematics 2018-08-07 Andrew Moorhead

We establish a conjecture of Mumford characterizing rationally connected complex projective manifolds in several cases.

Algebraic Geometry · Mathematics 2017-05-05 Vladimir Lazić , Thomas Peternell

In this paper, we prove the Geometric Arveson-Douglas Conjecture for a special case which allow some singularity on $\partial{\mathbb{B}_n}$. More precisely, we show that if a variety can be decomposed into two varieties, each having nice…

Functional Analysis · Mathematics 2017-04-14 Ronald G. Douglas , Yi Wang

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

We prove a strengthened form of a conjecture of Sun on a determinant attached to a binary quadratic form. Let $n>3$ and let $c,d\in\Z$. If $n$ is composite, then \[ \det\big[(i^2+cij+dj^2)^{n-2}\big]_{0\leq i,j\leq n-1}\equiv 0\pmod {n^2}…

Number Theory · Mathematics 2026-05-29 Yutong Zhang , Yaoran Yang

We completely determine all varieties of monoids on whose free objects all fully invariant congruences or all fully invariant congruences contained in the least semilattice congruence permute. Along the way, we find several new monoid…

Group Theory · Mathematics 2021-06-24 Sergey V. Gusev , Boris M. Vernikov

Following the work of Gao and Xie in [2], we state some properties of the inverse Kazhdan-Lusztig polynomial of a matroid. We also give partial answers to a conjecture that states that regular connected matroids are non-degenerate. We link…

Combinatorics · Mathematics 2021-04-21 Lorenzo Vecchi

We present results and examples which show that the consideration of a certain tubular mutation is advantageous in the study of noncommutative curves which parametrize the simple regular representations of a tame bimodule. We classify all…

Representation Theory · Mathematics 2008-06-16 Dirk Kussin

We recently formulated important Modular Bourgain-Tzafriri Restricted Invertibility Conjectures and Modular Johnson-Lindenstrauss Flattening Conjecture in the Appendix of \textit{[arXiv: 2207.12799.v1]}. For the sake of wide accessibility…

Functional Analysis · Mathematics 2022-08-11 K. Mahesh Krishna

We find a necessary and sufficient condition for the existence of the tensor product of modules over a Lie conformal algebra. We provide two algebraic constructions of the tensor product. We show the relation between tensor product and…

Quantum Algebra · Mathematics 2022-12-19 Jose I. Liberati

The Malle-Navarro conjecture relates central block theoretic invariants in two inequalities. In this paper, we prove the conjecture for the 2-blocks and the unipotent 3-blocks of the general linear and unitary groups in non-defining…

Representation Theory · Mathematics 2019-12-23 Sofia Brenner

Simple argument in favour of unitarity, to all orders, of space-like noncommutative theory is given.

High Energy Physics - Theory · Physics 2007-05-23 Piotr Kosinski , Pawel Maslanka

We show an invariance result for the L2-torsion of groups under uniform measure equivalence provided a measure-theoretic version of the determinant conjecture holds. The measure-theoretic determinant conjecture is discussed and, for…

Algebraic Topology · Mathematics 2010-04-20 Wolfgang Lueck , Roman Sauer , Christian Wegner

We study the homomorphisms between scalar generalized Verma modules. We conjecture that any homomorphism between is composition of elementary homomorphisms. The purpose of this article is to show the conjecture is affirmative for many…

Representation Theory · Mathematics 2019-02-20 Hisayosi Matumoto

In this paper, we introduce the notion of modular class of a Lie algebroid $A$ equipped with a Nambu structure satisfying some suitable hypothesis. We also introduce cohomology and homology theories for such Lie algebroids and prove that…

Differential Geometry · Mathematics 2014-01-30 Apurba Das , Shilpa Gondhali , Goutam Mukherjee

The theory of Topological Modular Forms suggests the existence of deformation invariants for two-dimensional supersymmetric field theories that are more refined than the standard elliptic genus. In this note we give a physical definition of…

High Energy Physics - Theory · Physics 2019-04-12 Davide Gaiotto , Theo Johnson-Freyd

We say that an idempotent term $t$ is an exact-$m$-majority term if $t$ evaluates to $a$, whenever the element $a$ occurs exactly $m$ times in the arguments of $t$, and all the other arguments are equal. If $m<n$ and some variety $\mathcal…

Rings and Algebras · Mathematics 2024-05-28 Paolo Lipparini

We establish an invertibility criterion for free polynomials and free functions evaluated on some tuples of matrices. We show that if the derivative is nonsingular on some domain closed with respect to direct sums and similarity, the…

Functional Analysis · Mathematics 2014-07-01 J. E. Pascoe

The Hodge conjecture is shown to be equivalent to a question about the homology of very ample divisors with ordinary double point singularities. The infinitesimal version of the result is also discussed.

Algebraic Geometry · Mathematics 2007-05-23 R. P. Thomas