Ends of groups and baseless subgroups of wreath products
Engulfing in word-hyperbolic groups.
Ensembles profinis simpliciaux et interprétation géométrique du foncteur
Epimorfismi -completi tra reticoli di sottogruppi normali
Equalizers and coactions of groups
If f:G → H is a group homomorphism and p,q are the projections from the free product G*H onto its factors G and H respectively, let the group be the equalizer of fp and q:G*H → H. Then p restricts to an epimorphism . A right inverse (section) of is called a coaction on G. In this paper we study and the sections of . We consider the following topics: the structure of as a free product, the restrictions on G resulting from the existence of a coaction, maps of coactions and the resulting...
Equations in groups, with special emphasis on localization and torsion - II
Equivalence élémentaire entre groupes finis-par-abéliens de type fini.
Equivalence of the strengthened Hanna Neumann conjecture and the amalgamated graph conjecture.
Equivalence relations induced by some locally compact groups of homeomorphisms of
Let T be a locally finite rooted tree and B(T) be the boundary space of T. We study locally compact subgroups of the group TH(B(T)) = ⟨Iso(T),V⟩ generated by the group Iso(T) of all isometries of B(T) and the group V of Richard Thompson. We describe orbit equivalence relations arising from actions of these groups on B(T).
Equivalent Expressions of Direct Sum Decomposition of Groups1
In this article, the equivalent expressions of the direct sum decomposition of groups are mainly discussed. In the first section, we formalize the fact that the internal direct sum decomposition can be defined as normal subgroups and some of their properties. In the second section, we formalize an equivalent form of internal direct sum of commutative groups. In the last section, we formalize that the external direct sum leads an internal direct sum. We referred to [19], [18] [8] and [14] in the...
Equivariant outer space and automorphisms of free-by-finite groups.
Erratum to: “Elementary embeddings in torsion-free hyperbolic groups”
Erratum to : “Green kernel estimates and the full Martin boundary for random walks on lamplighter groups and Diestel–Leader graphs”
Erratum to: Homology stability for outer automorphism groups of free groups.
Erratum to 'Rational Lie Algebras and p-Isomorphisms of Nilpotent Groups and Homotopy Types'
Erratum: W. S. Jassim, On the intersection of finitely generated subgroups of free groups, Rev. Mat. Univ. Compl. 9(1996), 67-84.
Attention is drawn to an error in W. S. Jassim's paper.
Estructura de Sylow de ciertos grupos localmente finitos.
Every reasonably sized matrix group is a subgroup of S ∞
Every reasonably sized matrix group has an injective homomorphism into the group of all bijections of the natural numbers. However, not every reasonably sized simple group has an injective homomorphism into .
Examples of highly transitive permutation groups
Exemples de nil-algèbres et de groupes infinis