Doubles of groups and hyperbolic LERF 3-manifolds.
Dual-Dedekind subgroups in finite groups
Dual-standard subgroups in nonperiodic locally soluble groups
Let G be a non-periodic locally solvable group. A characterization is given of the subgroups-D of G for which the map , for all , defines a lattice-endomorphism.
Dual-Standard subgroups of finite and locally finite groups.
Dynamics of out on the boundary of outer space
Efficient separability in free groups.
Ein Freiheitskriterium für pro-p-Gruppen mit Anwendung auf die Struktur der Brauer-Gruppe.
Ein neuer Zusammenhang zwischen einfachen Gruppen und einfachen Singularitäten.
Ein Untergruppensatz für modulare Gruppen.
Einbettungsrelationen und abgeleitete Gruppenklassen: ein Dualitätssatz.
Eine Bemerkung zu den Nielsen-Transformationen.
Elementary Abelian operator groups.
Elementary Abelian p-groups as Automorphism Groups of Infinite Groups. I.
Elementary embeddings in torsion-free hyperbolic groups
We describe first-order logic elementary embeddings in a torsion-free hyperbolic group in terms of Sela’s hyperbolic towers. Thus, if embeds elementarily in a torsion free hyperbolic group , we show that the group can be obtained by successive amalgamations of groups of surfaces with boundary to a free product of with some free group and groups of closed surfaces. This gives as a corollary that an elementary subgroup of a finitely generated free group is a free factor. We also consider the...
Elementi distributivi nel reticolo dei sottogruppi d'un gruppo localmente nilpotente
Elementi neutri nel reticolo dei sottogruppi d'un gruppo
Embedding orders into central simple algebras
The question of embedding fields into central simple algebras over a number field was the realm of class field theory. The subject of embedding orders contained in the ring of integers of maximal subfields of such an algebra into orders in that algebra is more nuanced. The first such result along those lines is an elegant result of Chevalley [6] which says that with the ratio of the number of isomorphism classes of maximal orders in into which the ring of integers of can be embedded...
Embedding Theorems for Residually Finite Groups.
Embeddings of graph braid and surface groups in right-angled Artin groups and braid groups.
Embeddings of U3 (8), Sz (8) and the Rudvalis group in algebraic groups of type E7.