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Q3082194 - MaRDI portal

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    9 March 2011
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    groups acting on graphs
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    combinatorial group theory
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    low-dimensional topology
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    Bass-Serre theory
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    groups acting on trees
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    Kurosh subgroup theorem
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    Nielsen-Schreier theorem
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    Schreier index formula
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    Grushko-Neumann theorem
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    distance-transitive graphs
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    almost stability theorem
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    Stallings ends theorem
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    groups of cohomological dimension one
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    Stallings-Swan theorem
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    augmentation ideals
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    accessibility
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    finitely generated groups
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    Poincaré duality groups
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    infinite surface groups
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    \(PD^n\)-groups
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    PD-pairs
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    actions of groups
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    two-dimensional simplicial complexes
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    finitely presented groups
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