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

@inproceedings{Andrew2021ABT, title={A Bass--Serre theoretic proof of a theorem of Burns and Romanovskii}, author={Naomi Andrew}, year={2021} }

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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