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Using the Luthar-Passi method, we investigate the classical Zassenhaus conjecture for the normalized unit group of the integral group ring of the Rudvalis sporadic simple group Ru. As a consequence, for this group we confirm Kimmerle's…

Rings and Algebras · Mathematics 2008-12-01 V. A. Bovdi , A. B. Konovalov

Using the Luthar--Passi method, we investigate the classical Zassenhaus conjecture for the normalized unit group of the integral group ring of the Suzuki sporadic simple group Suz. As a consequence, for this group we confirm the Kimmerle's…

Rings and Algebras · Mathematics 2008-03-17 V. A. Bovdi , A. B. Konovalov , E. N. Marcos

Using the Luthar-Passi method, we investigate the classical Zassenhaus conjecture for the normalized unit group of the integral group ring of the Higman-Sims simple sporadic group HS. As a consequence, we confirm the Kimmerle's conjecture…

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov

We consider the Zassenhaus conjecture for the normalized unit group of the integral group ring of the McLaughlin sporadic group McL. As a consequence, we confirm for this group the Kimmerle's conjecture on prime graphs.

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov

Using the Luthar--Passi method, we investigate the classical Zassenhaus conjecture for the normalized unit group of integral group rings of Janko sporadic simple groups. As a consequence, we obtain that the Gruenberg-Kegel graph of the…

Group Theory · Mathematics 2010-05-06 V. A. Bovdi , E. Jespers , A. B. Konovalov

We investigate the classical Zassenhaus conjecture for the unit group of the integral group ring of Mathieu simple group M23 using the Luthar-Passi method. This work is a continuation of the research that we carried out for Mathieu groups…

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov

We consider the Zassenhaus conjecture for the normalized unit group of the integral group ring of the Mathieu sporadic group M12. As a consequence, we confirm for this group the Kimmerle's conjecture on prime graphs.

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov , S. Siciliano

We consider the Zassenhaus conjecture for the normalized unit group of the integral group ring of the Mathieu sporadic group $M_{24}$. As a consequence, for this group we confirm Kimmerle's conjecture on prime graphs.

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov

We prove that the Zassenhaus conjecture is true for $PSL(2,8)$ and $PSL(2,17)$. This is a continuation of research initiated by W. Kimmerle, M. Hertweck and C. H\"ofert.

Rings and Algebras · Mathematics 2015-12-02 Joe Gildea

We investigated the classical Zassenhaus conjecture for the normalized unit group of the integral group ring of the simple Mathieu group M11. As a consequence, for this group we confirm the conjecture by Kimmerle about prime graphs.

Rings and Algebras · Mathematics 2007-06-13 V. A. Bovdi , A. B. Konovalov

We investigate the possible character values of torsion units of the normalized unit group of the integral group ring of Mathieu sporadic group $M_{22}$. We confirm the Kimmerle conjecture on prime graphs for this group and specify the…

Rings and Algebras · Mathematics 2007-05-23 V. A. Bovdi , A. B. Konovalov , S. Linton

It was conjectured by H. Zassenhaus that a torsion unit of an integral group ring of a finite group is conjugate to a group element within the rational group algebra. The object of this note is the computational aspect of a method developed…

Group Theory · Mathematics 2007-05-23 V. Bovdi , C. Höfert , W. Kimmerle

Using the Luthar--Passi method, we investigate the possible orders and partial augmentations of torsion units of the normalized unit group of integral group rings of Conway simple groups $Co_1$, $Co_2$ and $Co_3$.

Rings and Algebras · Mathematics 2010-12-22 V. Bovdi , A. Konovalov , S. Linton

In this article, we review the proofs of the first Zassenhaus Conjecture on conjugacy of torsion units in integral group rings for the alternating groups of degree 5 and 6, by Luthar-Passi and Hertweck. We describe how the study of these…

Rings and Algebras · Mathematics 2020-06-17 Andreas Bächle , Leo Margolis

As a sequel to our recent work on Casselman--Shahidi's holomorphicity conjecture on half-normalized intertwining operators for quasi-split classical groups, we modify our method, based on a lemma of Heiermann--Opdam, to prove certain cases…

Representation Theory · Mathematics 2024-09-24 Caihua Luo

We deduce the Kazhdan-Lusztig conjecture on the multiplicities of simple modules over a simple complex Lie algebra in Verma modules in category O from the equivariant geometric Satake correspondence and the analysis of torus fixed points in…

Representation Theory · Mathematics 2022-06-17 Alexander Braverman , Michael Finkelberg , Hiraku Nakajima

H.J. Zassenhaus conjectured that any unit of finite order in the integral group ring $\mathbb{Z}G$ of a finite group $G$ is conjugate in the rational group algebra $\mathbb{Q}G$ to an element of the form $\pm g$ with $g \in G$. Though known…

Rings and Algebras · Mathematics 2018-04-12 Leo Margolis , Ángel del Río , Mariano Serrano

We introduce the concepts of an amazing hypercube decomposition and a double shortcut for it, and use these new ideas to formulate a conjecture implying the Combinatorial Invariance Conjecture of the Kazhdan--Lusztig polynomials for the…

Combinatorics · Mathematics 2024-11-27 Francesco Esposito , Mario Marietti , Grant T. Barkley , Christian Gaetz

Let $K$ be the function field of a $p$-adic curve, $G$ a semisimple simply connected group over $K$ and $X$ a $G$-torsor over $K$. A conjecture of Colliot-Th\'el\`ene, Parimala and Suresh predicts that if for every discrete valuation $v$ of…

Algebraic Geometry · Mathematics 2014-10-09 Yong Hu

We prove Cherlin's conjecture, concerning binary primitive permutation groups, for those groups with socle isomorphic to a sporadic simple group.

Group Theory · Mathematics 2018-10-17 Nick Gill , Francesca Dalla Volta , Pablo Spiga
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