A Bass-Serre theoretic proof of a theorem of Romanovskii and Burns
A well known theorem of Romanovskii and Burns states that a free product of subgroup separable groups is itself subgroup separable. We provide a proof using the language of immersions and coverings of graphs of groups, due to Bass.
| Glavni autor: | |
|---|---|
| Format: | Journal article |
| Jezik: | English |
| Izdano: |
Taylor & Francis
2022
|
| Sažetak: | A well known theorem of Romanovskii and Burns states that a free product
of subgroup separable groups is itself subgroup separable. We provide a proof using the
language of immersions and coverings of graphs of groups, due to Bass. |
|---|