Results 31 to 40 of about 1,458,495 (316)

Inverses of measures on a class of discrete groups

International Journal of Mathematics and Mathematical Sciences, 1991
We examine a class of groups G, having a certain growth condition. We given an estimate for the norm of the inverse of an element in ll(G) in terms of the spectral radius and the cardinality of the support.
C. Karanikas
doaj   +1 more source

ON EQUALITY OF ABSOLUTE CENTRAL AND CLASS PRESERVING AUTOMORPHISMS OF FINITE p-GROUPS [PDF]

Journal of Algebraic Systems, 2019
Let $G$ be a finite non-abelian $p$-group and $L(G)$ denotes the absolute center of $G$. Also, let $Aut^{L}(G)$ and $Aut_c(G)$ denote the group of all absolute central and the class preserving automorphisms of $G$, respectively.
Rasoul Soleimani
doaj   +1 more source

Trace Class Groups

Journal of Lie Theory, 2016
A representation $π$ of a locally compact group $G$ is called \e{trace class}, if for every test function $f$ the induced operator $π(f)$ is a trace class operator. The group $G$ is called \e{trace class}, if every $π\in G$ is trace class. We show that trace class groups are type I and give a criterion for semi-direct products to be trace class and ...
Deitmar, A., Dijk, G. van
openaire   +4 more sources

Use of Class Facebook Groups to Disseminate Evidence-Based Study Tips

INNOVATIONS in Pharmacy, 2017
Objective: The purpose of this preliminary project was to determine the effectiveness of college administrators using Facebook® (FB) to disseminate information on study methods.
Gina J Ryan, Jill Augustine
doaj   +1 more source

Mapping class groups of simply connected high-dimensional manifolds need not be arithmetic

Comptes Rendus. Mathématique, 2020
It is well known that Sullivan showed that the mapping class group of a simply connected high-dimensional manifold is commensurable with an arithmetic group, but the meaning of “commensurable” in this statement seems to be less well known. We explain why
Krannich, Manuel, Randal-Williams, Oscar
doaj   +1 more source

On numbers which are orders of nilpotent groups with bounded class [PDF]

International Journal of Group Theory
Let $n$ be a positive integer. In this short note, we characterize those numbers $m$ for which any group of order $m$ is an $n$-Engel group and those numbers $m$ for which any group of order $m$ has all its subgroups subnormal of defect at most $n$.
Maria Ferrara
doaj   +1 more source

Class Groups and Selmer Groups

Journal of Number Theory, 1996
It is often the case that a Selmer group of an abelian variety and a group related to an ideal class group can both be naturally embedded into the same cohomology group. One hopes to compute one from the other by finding how close each is to their intersection.
openaire   +3 more sources

On a class of butler groups

manuscripta mathematica, 1991
Using elementary lattice theoretic and linear algebraic techniques, the authors classify up to isomorphism and up to quasi-isomorphism the strongly indecomposable Butler groups that occur as quotients of a finite rank completely decomposable torsion-free abelian group modulo a rank 1 pure subgroup.
Fuchs, Laszlo, Metelli, Claudia
openaire   +2 more sources

Isomorphism versus commensurability for a class of finitely presented groups

, 2014
We construct a class of finitely presented groups where the isomorphism problem is solvable but the commensurability problem is unsolvable. Conversely, we construct a class of finitely presented groups within which the commensurability problem is ...
Arzhantseva, Goulnara, Minasyan, Ashot, Lafont, Jean-Francois   +2 more
core   +1 more source

On the commutator lengths of certain classes of finitely presented groups [PDF]

, 2006
For a finite group G = 〈X〉 (X ≠ G), the least positive integer ML(G) is called the maximum length of G with respect to the generating set X if every element of G maybe represented as a product of at most ML(G) elements of X.
H. Doostie, Doostie, H., Campbell, P.P., H. Doostie, P. P. Campbell   +4 more
core   +1 more source