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A virtually free pro-p need not be the fundamental group of a profinite graph of finite groups |
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| Authors: | Wolfgang Herfort Pavel A Zalesskii |
| Institution: | 1. University of Technology at Vienna, Vienna, Austria 2. University of Brasilia, Brasilia, DF, Brazil |
| Abstract: | A subgroup of a pro-p product with amalgamation of two p-groups is given which cannot be presented as the pro-p fundamental group of a profinite graph of p-groups. |
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