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Documents de recerca, 3 registres trobats

Documents de recerca	3 registres trobats

28 p, 328.3 KB

Statistical properties of subgroups of free groups / Bassino, Frédérique ; Martino, Armando ; Nicaud, Cyril ; Ventura, Enric ; Weil, Pascal ; Centre de Recerca Matemàtica
The usual way to investigate the statistical properties of finitely generated subgroups of free groups, and of finite presentations of groups, is based on the so-called word-based distribution: subgroups are generated (finite presentations are determined) by randomly chosen k-tuples of reduced words, whose maximal length is allowed to tend to infinity. [...]
Centre de Recerca Matemàtica 2010 (Prepublicacions del Centre de Recerca Matemàtica ; 922)

7 p, 173.9 KB

15 p, 195.6 KB

Infinite index subgroups and finiteness properties of intersections of geometrically finite groups / Apanasov, Boris N. ; Centre de Recerca Matemàtica
We explore which types of finiteness properties are possible for intersections of geometrically finite groups of isometries in negatively curved symmetric rank one spaces. Our main tool is a twist construction which takes as input a geometrically finite group containing a normal subgroup of infinite index with given finiteness properties and infinite Abelian quotient, and produces a pair of geometrically finite groups whose intersection is isomorphic to the normal subgroup.
Centre de Recerca Matemàtica 2005 (Prepublicacions del Centre de Recerca Matemàtica ; 613)

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