Fixed Subgroups are not Compressed in Direct Products of Surface Groups

期刊论文
发表日期：

2024年9月1日

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Qiang Zhang,
Jianchun Wu,
Fanling Gu

摘要

By constructing counterexamples, the authors show that the fixed subgroups are not compressed in direct products of free and surface groups, and hence negate a conjecture in [Zhang, Q., Ventura, E. and J. Wu, Fixed subgroups are compressed in surface groups, Internat. J. Algebra Comput., 25, 2015, 865–887].