Results 41 to 50 of about 5,046 (150)

Subgroups approximatively of finite index and wreath products

Groups, Geometry, and Dynamics, 2014
In a group,we introduce a notion of subgroup approximatively of finite index, which extends the notion of groups approximable by finite groups. We deduce a characterization of (restricted, permutational) wreath products that are approximable by finite groups.
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Functorial topologies and finite-index subgroups of abelian groups

Topology and its Applications, 2011
19 ...
DIKRANJAN, Dikran, GIORDANO BRUNO, Anna
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Multiplicative subgroups of finite index in a division ring [PDF]

Proceedings of the American Mathematical Society, 1994
If G G is a subgroup of finite index n n in the multiplicative group of a division ring F F then G − G = F G - G = F or | F | > ( n − 1
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On computing finite index subgroups of PSL2(ℤ)

Journal of Algebra and Its Applications
We present a method to compute finite index subgroups of [Formula: see text]. Our strategy follows Kulkarni’s ideas, the main contribution being a recursive method to compute bivalent trees as well as their automorphism groups. As a concrete application, we compute all subgroups of index up to [Formula: see text].
Nicolás Mayorga Uruburu, Ariel Pacetti, Leandro Vendramin   +2 more
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Virtual endomorphisms of the group $pg$

Researches in Mathematics
A virtual endomorphism of a group $G$ is a homomorphism of the form $\phi:H\rightarrow G$, where ...
I. Bondarenko, D. Zashkolny
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Semisimple groups interpretable in various valued fields

Forum of Mathematics, Sigma
We study infinite groups interpretable in power bounded T-convex, V-minimal or p-adically closed fields. We show that if G is an interpretable definably semisimple group (i.e., has no definable infinite normal abelian subgroups) then, up to a finite ...
Yatir Halevi, Assaf Hasson, Ya'acov Peterzil   +2 more
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Additive Properties of Multiplicative Subgroups of Finite Index in Fields [PDF]

Proceedings of the American Mathematical Society, 1991
Gallai’s theorem, an n n -dimensional generalization of Van der Waerden’s theorem on arithmetic progression, is used to prove the following theorem: Let F F be a field and G ⊆ F ∗ G \subseteq {F^ * } a subgroup of finite index
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Extension of Size and Degree of (k,r)-Caps in PG(3,13)

Ibn Al-Haitham Journal for Pure and Applied Sciences
The aim of this work is an extension of the   -caps (  is the order, is the degree), where , in the three projective space of dimension over the Galois field of order thirteen, .
Saja Makki Attook Attook, Emad Bakr Al-Zangana   +1 more
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The intersection of the subgroups of finite index in some finitely presented groups [PDF]

Proceedings of the American Mathematical Society, 1975
We consider the intersection of the subgroups of finite index in some finitely presented non-Hopfian groups.
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Subgroups of finite index in profinite groups

Mathematische Zeitschrift, 1979
Let ~ be a class of finite groups. By this we understand that ~ is a class in the usual sense, which contains all groups of order 1, and contains, with every group G ~ , all isomorphic copies of G. By a pro-~ group, we mean a topological group isomorphic to an inverse limit of groups in ~, viewed as a topological group in the usual way.
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