On approximation properties of semidirect products of groups
Autor: | Arzhantseva, Goulnara, Gal, Światosław R. |
---|---|
Rok vydání: | 2013 |
Předmět: | |
Zdroj: | Annales Math\'ematiques Blaise Pascal, Tome 27 (2020) no. 1, pp. 125-130 |
Druh dokumentu: | Working Paper |
DOI: | 10.5802/ambp.386 |
Popis: | Let R be a class of groups closed under taking semidirect products with finite kernel and fully residually R-groups. We prove that R contains all R-by-{finitely generated residually finite} groups. It follows that a semidirect product of a finitely generated residually finite group with a surjunctive group is surjunctive. This remained unknown even for direct products of a surjunctive group with the integers Z. Comment: 6 pages, no figures |
Databáze: | arXiv |
Externí odkaz: |