Tubular groups and non positive curvature
| Autor: | Button, J O |
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| Rok vydání: | 2017 |
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| Druh dokumentu: | Working Paper |
| Popis: | We show (using results of Wise and of Woodhouse) that a tubular group is always virtually special (meaning that it has a finite index subgroup embedding in a RAAG) if the underlying graph is a tree. We also adapt Gardam and Woodhouse's argument on tubular groups which double cover 1-relator groups to show there exist 1-relator groups which are CAT(0) but not residually finite. Comment: Updated version, CAT(0) part shortened, some 1-relator material added |
| Databáze: | arXiv |
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