Results 21 to 30 of about 444,260 (331)

The theorems of Schur and Baer: a survey [PDF]

open access: yesInternational Journal of Group Theory, 2015
This paper gives a short survey of some of the known results generalizing the theorem, credited to I. Schur, that if the central factor group is finite then the derived subgroup is also finite.
Martyn Dixon   +2 more
doaj  

Separable and Low-Rank Continuous Games [PDF]

open access: yes, 2007
In this paper, we study nonzero-sum separable games, which are continuous games whose payoffs take a sum-of-products form. Included in this subclass are all finite games and polynomial games. We investigate the structure of equilibria in separable games.
Asuman Ozdaglar   +17 more
core   +5 more sources

Groups Factorized by Pairwise Permutable Abelian Subgroups of Finite Rank [PDF]

open access: yesAdvances in Group Theory and Applications, 2016
It is proved that a group which is the product of pairwise permutable abelian subgroups of finite Prüfer rank is hyperabelian with finite Prüfer rank; in the periodic case the Sylow subgroups of such a product are described.
Bernhard Amberg, Yaroslav P. Sysak
doaj   +1 more source

Lie rank in groups of finite Morley rank with solvable local subgroups [PDF]

open access: yes, 2013
We prove a general dichotomy theorem for groups of finite Morley rank with solvable local subgroups and of Pr\"ufer p-rank at least 2, leading either to some p-strong embedding, or to the Pr\"ufer p-rank being exactly ...
Deloro, Adrien, Jaligot, Eric
core   +5 more sources

On Projective Modules of Finite Rank [PDF]

open access: yesProceedings of the American Mathematical Society, 1969
One of the aims of this paper is to answer the following question: Let R be a commutative ring for which projective ideals are finitely generated; is the same valid in R [x], the polynomial ring in one variable over R? A Hilbert basis type of argument does not seem to lead directly to a solution.
openaire   +1 more source

ON THE RANK OF A VERBAL SUBGROUP OF A FINITE GROUP [PDF]

open access: yesJournal of the Australian Mathematical Society, 2021
AbstractWe show that if w is a multilinear commutator word and G a finite group in which every metanilpotent subgroup generated by w-values is of rank at most r, then the rank of the verbal subgroup $w(G)$ is bounded in terms of r and w only. In the case where G is soluble, we obtain a better result: if G is a finite soluble group in which every ...
Detomi E., Morigi M., Shumyatsky P.
openaire   +6 more sources

On the minimal ramification problem for $\ell$-groups [PDF]

open access: yes, 2010
Let p be a prime number. It is not known if every finite p-group of rank n>1 can be realized as a Galois group over Q with no more than n ramified primes.
Hershy Kisilevsky   +4 more
core   +1 more source

Planarity ranks for varieties of equationally noetherian semigroups [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The problem of describing semigroup varieties with finite planarity rank is researched. In addition to the previously obtained results the author finds new countable infinite series of semigroup varieties with finite planarity rank.
Solomatin, Denis Vladimirovich
doaj   +1 more source

Asymptotic Properties of Spearman's Rank Correlation for Variables with Finite Support. [PDF]

open access: yesPLoS ONE, 2016
The asymptotic variance and distribution of Spearman's rank correlation have previously been known only under independence. For variables with finite support, the population version of Spearman's rank correlation has been derived.
Petra Ornstein, Johan Lyhagen
doaj   +1 more source

On conformal Jordan cells of finite and infinite rank

open access: yes, 2004
This work concerns in part the construction of conformal Jordan cells of infinite rank and their reductions to conformal Jordan cells of finite rank. It is also discussed how a procedure similar to Lie algebra contractions may reduce a conformal Jordan ...
I. Bakas   +6 more
core   +1 more source

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