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.
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| Materiálatiipa: | Journal article |
| Giella: | English |
| Almmustuhtton: |
Taylor & Francis
2022
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| Čoahkkáigeassu: | 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. |
|---|