Ia-Automorphisms and Permutational Wreath Products
Il gruppo degli automorfismi esterni di un -gruppo nilpotente infinito e suoi -sottogruppi normali
Infinite soluble groups with no outer automorphisms
Infinitesimal Morita homomorphisms and the tree-level of the LMO invariant
Let be a compact connected oriented surface with one boundary component, and let be the fundamental group of . The Johnson filtration is a decreasing sequence of subgroups of the Torelli group of , whose -th term consists of the self-homeomorphisms of that act trivially at the level of the -th nilpotent quotient of . Morita defined a homomorphism from the -th term of the Johnson filtration to the third homology group of the -th nilpotent quotient of . In this paper, we replace groups...
Intersections of automorphism fixed subgroups in the free group of rank three.