scholarly journals On the torsion units of the integral group ring of finite projective special linear groups

2017 ◽  
Vol 45 (12) ◽  
pp. 5073-5087 ◽  
Author(s):  
Ángel del Río ◽  
Mariano Serrano
Keyword(s):  
Group Ring ◽  
Integral Group Ring ◽  
Linear Groups ◽  
Integral Group ◽  
Special Linear ◽  
Projective Special Linear Groups ◽  
Special Linear Groups ◽  
Torsion Units

scholarly journals Generating pairs of projective special linear groups that fail to lift

2020 ◽  
Vol 293 (7) ◽  
pp. 1251-1258
Author(s):  
Jan Boschheidgen ◽  
Benjamin Klopsch ◽  
Anitha Thillaisundaram
Keyword(s):  
Linear Groups ◽  
Special Linear ◽  
Projective Special Linear Groups ◽  
Special Linear Groups

RECOGNIZING BY ORDER AND DEGREE PATTERN OF SOME PROJECTIVE SPECIAL LINEAR GROUPS

2012 ◽  
Vol 22 (06) ◽  
pp. 1250051 ◽  
Author(s):  
B. AKBARI ◽  
A. R. MOGHADDAMFAR
Keyword(s):  
Finite Group ◽  
Finite Groups ◽  
Linear Groups ◽  
Special Linear ◽  
Projective Special Linear Groups ◽  
Special Linear Groups ◽  
Isomorphism Classes ◽  
Degree Pattern ◽  
A Finite Group

Let M be a finite group and D (M) be the degree pattern of M. Denote by h OD (M) the number of isomorphism classes of finite groups G with the same order and degree pattern as M. A finite group M is called k-fold OD-characterizable if h OD (M) = k. Usually, a 1-fold OD-characterizable group is simply called OD-characterizable. The purpose of this article is twofold. First, it provides some information on the structure of a group from its degree pattern. Second, it proves that the projective special linear groups L4(4), L4(8), L4(9), L4(11), L4(13), L4(16), L4(17) are OD-characterizable.

scholarly journals PROJECTIVE SPECIAL LINEAR GROUPS PSL4(q) ARE DETERMINED BY THE SET OF THEIR CHARACTER DEGREES

2012 ◽  
Vol 11 (06) ◽  
pp. 1250108 ◽  
Author(s):  
HUNG NGOC NGUYEN ◽  
HUNG P. TONG-VIET ◽  
THOMAS P. WAKEFIELD
Keyword(s):  
Finite Group ◽  
Character Degrees ◽  
Linear Groups ◽  
Complex Character ◽  
Special Linear ◽  
Projective Special Linear Groups ◽  
Special Linear Groups ◽  
The Family ◽  
Group A ◽  
A Finite Group

Let G be a finite group and let cd (G) be the set of all irreducible complex character degrees of G. It was conjectured by Huppert in Illinois J. Math.44 (2000) that, for every non-abelian finite simple group H, if cd (G) = cd (H) then G ≅ H × A for some abelian group A. In this paper, we confirm the conjecture for the family of projective special linear groups PSL 4(q) with q ≥ 13.

scholarly journals Torsion Units in Integral Group Ring of the Mathieu Simple Group M22

2008 ◽  
Vol 11 ◽  
pp. 28-39 ◽  
Author(s):  
V. A. Bovdi ◽  
A. B. Konovalov ◽  
S. Linton
Keyword(s):  
Simple Group ◽  
Group Ring ◽  
Unit Group ◽  
Integral Group Ring ◽  
Integral Group ◽  
Sporadic Group ◽  
Prime Graphs ◽  
Zassenhaus Conjecture ◽  
Torsion Units

AbstractWe investigate the possible character values of torsion units of the normalized unit group of the integral group ring of the Mathieu sporadic group M22. We confirm the Kimmerle conjecture on prime graphs for this group and specify the partial augmentations for possible counterexamples to the stronger Zassenhaus conjecture.

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