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Spherical diagrams and equations over groups

Published online by Cambridge University Press:  24 October 2008

James Howie
James Howie
Affiliation:
Department of Mathematics, University of Glasgow
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Extract

Spherical diagrams were introduced by Lyndon and Schupp[14] in order to study asphericity in group presentations and in 2-complexes. They have since been studied by several authors [2, 3, 5]. In particular, some technical loopholes in the original approach were closed in [5]. For many purposes the dual notion of pictures, introduced by Rourke[17], is more useful. These arise naturally through transversality. Pictures have also been studied and applied in [2, 5, 6, 12, 19].

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 96 , Issue 2 , September 1984 , pp. 255 - 268
Copyright
Copyright © Cambridge Philosophical Society 1984

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References

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