The rhombic dodecahedron and semisimple actions of Aut(F-n) on CAT (0) spaces
We consider actions of automorphism groups of free groups by semisimple isometries on complete CAT(0) spaces. If n ≥ 4 then each of the Nielsen generators of Aut(Fn) has a fied point. If n = 3 then either each of the Nielsen generators has a fixed point, or else they are hyperbolic and each Nielsen-...
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| Format: | Journal article |
| Language: | English |
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2011
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