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Q4273699 - MaRDI portal

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scientific article; zbMATH DE number 475452
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scientific article; zbMATH DE number 475452

    Statements

    30 March 1995
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    \(HNN\)-extension
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    torus theorem
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    fundamental group
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    rank 2 free abelian subgroup
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    2-sided embedded incompressible torus
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    infinite cyclic normal subgroup
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    3-dimensional Poincaré duality group
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    free product with amalgamation
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    end invariants of pairs of groups
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    Identifiers

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