نتایج جستجو برای: tau cocompact module
تعداد نتایج: 87499 فیلتر نتایج به سال:
throughout this dissertation r is a commutative ring with identity and m is a unitary r-module. in this dissertation we investigate submodules of multiplication , prufer and dedekind modules. we also stat the equivalent conditions for which is ring , wher l is a submodule of afaithful multiplication prufer module. we introduce the concept of integrally closed modules and show that faithful mu...
Let M be a convex cocompact, acylindrical hyperbolic 3-manifold of infinite volume, and let M∗ denote the interior of the convex core of M . In this paper we show that any geodesic plane inM∗ is either closed or dense. We also show that only countably many planes are closed. These are the first rigidity theorems for planes in convex cocompact 3-manifolds of infinite volume that depend only on t...
We describe a construction of cocompact models for the classifying spaces EΓ g,r , where Γ g,r stands for the mapping class group of an oriented surface of genus g with r boundary components and s punctures. Our construction uses a cocompact model for EΓ g,0 as an input, a case which has been dealt with in [3]. We then proceed by induction on r and s.
This article is dedicated to the characterisation of relative hyperbolicity Haglund and Wise’s special groups. More precisely, we introduce a new combinatorial formalism study (virtually) groups, prove that, given cocompact group G finite collection subgroups \({\cal H}\), then hyperbolic H}\) if only (i) each subgroup convex-cocompact, (ii) an almost malnormal collection, (iii) every non-virtu...
We develop a theory of convex cocompact subgroups of the mapping class group MCG of a closed, oriented surface S of genus at least 2, in terms of the action on Teichmüller space. Given a subgroup G of MCG de ning an extension 1 ! 1(S) ! ΓG ! G ! 1, we prove that if ΓG is a word hyperbolic group then G is a convex cocompact subgroup of MCG. When G is free and convex cocompact, called a Schottky ...
Tau, MAP2, and MAP4 are members of a microtubule-associated protein (MAP) family that are each expressed as "3-repeat" and "4-repeat" isoforms. These isoforms arise from tightly controlled tissue-specific and/or developmentally regulated alternative splicing of a 31-amino acid long "inter-repeat:repeat module," raising the possibility that different MAP isoforms may possess some distinct functi...
We study finitely generated discrete groups of hyperbolic plane isometries (including those which reverse orientation) with non-compact orbit space. A presentation by generators and relations this type group is obtained. To that end, we use the geometrical properties a fundamental region canonical form, apply Macbeath’s classical theorem on presentations simply connected spaces. Our main result...
Let Λ be a minimal Kac–Moody group of rank 2 defined over the finite field Fq , where q = pa with p prime. Let G be the topological Kac–Moody group obtained by completing Λ. An example is G = SL2(K), where K is the field of formal Laurent series over Fq . The group G acts on its Bruhat–Tits building X, a tree, with quotient a single edge. We construct new examples of cocompact lattices in G, ma...
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