• 제목/요약/키워드: Hattori-Stallings rank.

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Finiteness properties of some poincare duality groups

  • Lee, Jong-Bum;Park, Chan-Young
    • 대한수학회지
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    • 제32권1호
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    • pp.33-40
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    • 1995
  • A space Y is called finitely dominated if there is a finite complex K such that Y is a retract of K in the homotopy category, i.e., we require maps $i : Y \longrightarrow K and r : K \longrightarrow Y with r \circ i \simeq idy$. The following questions are very classical in topology.

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