Aspherical four-manifolds and the centres of two-knot groups

DOI10.1007/BF02566223zbMath0478.57016MaRDI QIDQ1161183

Jonathan A. Hillman

Publication date: 1981

Published in: Commentarii Mathematici Helvetici (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/139880

zbMATH Keywords

Euler characteristicdeficiency of groupsPoincare dualitycentre of the group of a 2-knotgroup with a nontrivial central element of infinite orderhopfian modules

Mathematics Subject Classification ID

Group rings of infinite groups and their modules (group-theoretic aspects) (20C07) Generators, relations, and presentations of groups (20F05) Fundamental group, presentations, free differential calculus (57M05) Fundamental groups and their automorphisms (group-theoretic aspects) (20F34)

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