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Let $G$ be a simple simply-connected connected linear algebraic group over $\mathbb{C}$. We proved a $2$-birational Torelli theorem for the moduli space of semistable principal $G$-bundles over a smooth curve of genus $\geq 3$, which says…

Algebraic Geometry · Mathematics 2022-03-03 Sumit Roy

As the reviewer have pointed out, the proof of Roelke Conjecture contains an error. For cofinite groups, we obtain a formula connecting the discrete spectrum of Laplace operator and the resonance spectrum. Using this formula, we give a…

Number Theory · Mathematics 2019-01-25 Dmitry A. Popov

We compute the integral third homology of most of the sporadic finite simple groups and of their central extensions.

Group Theory · Mathematics 2019-08-13 Theo Johnson-Freyd , David Treumann

Let $H$ be a finite quasisimple classical group, i.e. $H$ is perfect and $S:=H/Z(H)$ is a finite simple classical group. We prove in this paper that, excluding the cases when the simple group $S$ has a very exceptional Schur multiplier such…

Group Theory · Mathematics 2011-08-16 Hung Ngoc Nguyen

We prove the A-theoretic Isomorphism Conjecture with coefficients and finite wreath products for solvable groups.

K-Theory and Homology · Mathematics 2017-10-10 F. Thomas Farrell , Xiaolei Wu

We refer to the set of the orders of elements of a finite group as its spectrum and say that groups are isospectral if their spectra coincide. We prove that with the only specific exception the solvable radical of a nonsolvable finite group…

Group Theory · Mathematics 2022-07-07 Nanying Yang , Mariya A. Grechkoseeva , Andrey V. Vasil'ev

We derive Verlinde's formula from the fixed point formula for loop groups proved in the companion paper "A fixed point formula for loop group actions", and extend it to compact, connected groups that are not necessarily simply-connected.

Symplectic Geometry · Mathematics 2007-05-23 Anton Alekseev , Eckhard Meinrenken , Chris Woodward

We find surface subgroups in certain one-relator groups with torsion and use this to deduce a profinite criterion for a word in the free group to be primitive.

Group Theory · Mathematics 2025-10-03 Andrew Ng

We prove the K- and L-theoretic Farrell-Jones Conjecture (with coefficients in additive categories) for virtually solvable groups.

Geometric Topology · Mathematics 2017-05-17 Christian Wegner

The purpose of this article is to prove that Gersten's conjecture for a commutative regular local ring is true. As its applications, we will prove the vanishing conjecture for certain Chow groups, generator conjecture for certain $K$-groups…

K-Theory and Homology · Mathematics 2007-05-23 Satoshi Mochizuki

The goal of this paper is to give a conjectural census of complex hyperbolic sporadic groups. We prove that only finitely many of these sporadic groups are lattices. We also give a conjectural list of all lattices among sporadic groups, and…

Geometric Topology · Mathematics 2011-01-11 Martin Deraux , John R. Parker , Julien Paupert

We formulate and prove an analogue of Beurling's theorem for the Fourier transform on the Heisenberg group. As a consequence we deduce Hardy and Cowling-Price theorems.

Classical Analysis and ODEs · Mathematics 2021-07-12 Sundaram Thangavelu

Let $f : X \rightarrow B$ be a proper flat dominant morphism between two smooth quasi-projective complex varieties $X$ and $B$. Assume that there exists an integer $l$ such that all closed fibres $X_b$ of $f$ satisfy $CH_j(X_b) = \Q$ for…

Algebraic Geometry · Mathematics 2012-03-14 Charles Vial

A Beauville surface is a rigid complex surface of general type, isogenous to a higher product by the free action of a finite group, called a Beauville group. Here we consider which characteristically simple groups can be Beauville groups.…

Group Theory · Mathematics 2013-04-22 Gareth A. Jones

We prove the Borel Conjecture for a class of groups containing word-hyperbolic groups and groups acting properly, isometrically and cocompactly on a finite dimensional CAT(0)-space.

Geometric Topology · Mathematics 2010-03-26 Arthur Bartels , Wolfgang Lueck

A permutation group is said to be quasiregular if every its transitive constituent is regular, and a quasiregular coherent configuration can be thought as a combinatorial analog of such a group: the transitive constituents are replaced by…

Combinatorics · Mathematics 2018-01-08 Mitsugu Hirasaka , Kijung Kim , Ilia Ponomarenko

Using iterated vanishing cycles and convolution, we prove a motivic version of a conjecture of Steenbrink concerning the spectrum of hypersurface singularities

Algebraic Geometry · Mathematics 2007-12-05 G. Guibert , F. Loeser , M. Merle

We prove that if $\pi$ is a recursive set of primes, then pointlike sets are decidable for the pseudovariety of semigroups whose subgroups are $\pi$-groups. In particular, when $\pi$ is the empty set, we obtain Henckell's decidability of…

Group Theory · Mathematics 2007-06-17 Karsten Henckell , John Rhodes , Benjamin Steinberg

We study the Fibered Isomorphism Conjecture of Farrell and Jones in L-theory for groups acting on trees. In several cases we prove the conjecture. This includes wreath products of abelian groups and free metabelian groups. We also deduce…

K-Theory and Homology · Mathematics 2012-04-30 S. K. Roushon

In this article we study the (cohomological) Hodge conjecture for singular varieties. We prove the conjecture for simple normal crossing varieties that can be embedded in a family where the Mumford-Tate group remains constant. We show how…

Algebraic Geometry · Mathematics 2023-01-04 Ananyo Dan , Inder Kaur