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arXiv · 2107.02548

A Bass--Serre theoretic proof of a theorem of Burns and Romanovskii

Naomi Andrew
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Abstract

A well known theorem of Burns and Romanovskii 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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Naomi Andrew. 2021-07-06. A Bass--Serre theoretic proof of a theorem of Burns and Romanovskii. https://arxiv.org/abs/2107.02548

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