A characterisation of virtually free gro
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Robert H. Gilman; Susan Hermiller; Derek F. Holt; Sarah Rees
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Article
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2007
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Springer
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English
โ 130 KB
We prove that a finitely generated group G is virtually free if and only if there exists a generating set for G and ะบ > 0 such that all k-locally geodesic words with respect to that generating set are geodesic.