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Lattice of normal subgroups of a group of local isometries of the boundary of a spherically homogeneous tree

✍ Scribed by Ya. V. Lavrenyuk; V. I. Sushchanskii


Publisher
Springer
Year
2008
Tongue
English
Weight
127 KB
Volume
60
Category
Article
ISSN
0041-5995

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πŸ“œ SIMILAR VOLUMES


The Top of the Lattice of Normal Subgrou
✍ Tullio Ceccherini-Silberstein; Fabio Scarabotti; Filippo Tolli πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 182 KB

A complete description of the lattice of all normal subgroups not contained in the stabilizer of the fourth level of the tree and, consequently, of index ≀ 2 12 in the Grigorchuk group G is given. This leads to the following sharp version of the congruence property: a normal subgroup not contained i