Results 11 to 20 of about 27,799 (266)

Structure of Finite-Dimensional Protori

open access: yesAxioms, 2019
A Structure Theorem for Protori is derived for the category of finite-dimensional protori (compact connected abelian groups), which details the interplay between the properties of density, discreteness, torsion, and divisibility within a finite ...
Wayne Lewis
doaj   +1 more source

Logics of Finite Hankel Rank [PDF]

open access: yes, 2015
Appeared in YuriFest 2015, held in honor of Yuri Gurevich's 75th birthday.
Nadia Labai, Johann A. Makowsky
openaire   +2 more sources

Some Residual Properties of Finite Rank Groups

open access: yesМоделирование и анализ информационных систем, 2014
The generalization of one classical Seksenbaev theorem for polycyclic groups is obtained. Seksenbaev proved that if G is a polycyclic group which is residually finite p-group for infinitely many primes p, it is nilpotent. Recall that a group G is said to
D. N. Azarov
doaj   +1 more source

Vector bundles of finite rank on complete intersections of finite codimension in ind-Grassmannians

open access: yesComplex Manifolds, 2015
In this article we establish an analogue of the Barth-Van de Ven-Tyurin-Sato theorem.We prove that a finite rank vector bundle on a complete intersection of finite codimension in a linear ind-Grassmannian is isomorphic to a direct sum of line bundles.
Ermakova Svetlana
doaj   +1 more source

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

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  

On groups of finite Prüfer rank II

open access: yesRendiconti del Seminario Matematico della Università di Padova, 2023
Let G be a group of finite (Prüfer) rank and \pi any finite set of primes. We prove, in particular, that G
openaire   +2 more sources

Surfaces of Finite Domain Rank [PDF]

open access: yesProceedings of the American Mathematical Society, 1970
In this paper it is shown that a surface has finite domain rank if and only if it is homeomorphic to a domain of a compact or closed surface.
openaire   +2 more sources

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

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