A new test for asphericity and diagrammatic reducibility of group presentations

We present a new test for studying asphericity and diagrammatic reducibility of group presentations. Our test can be applied to prove diagrammatic reducibility in cases where the classical weight test fails. We use this criterion to generalize results of J. Howie and S.M. Gersten on asphericity of L...

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Detalles Bibliográficos
Autores principales: Barmak, J.A., Minian, E.G.
Formato: INPR
Materias:
Adian presentations
Asphericity
DR presentations
labelled oriented trees
locally indicable groups
weight test
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03082105_v_n_p_Barmak
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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