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.

Manylion Llyfryddiaeth
Prif Awdur: Andrew, N
Fformat: Journal article
Iaith:English
Cyhoeddwyd: Taylor & Francis 2022

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