Heriot-Watt Mathematics Report Series
HWM97-1, Feb 1998

Free subgroups in groups of small deficiency

J Howie


Abstract

It is shown that finitely presented groups of deficiency 1 with sufficiently big abelian homomorphic images contain free subgroups. Somewhat weaker results are obtained for groups of deficiency 0. These results are applied to a conjecture of Rosenberger, that generalised trianglegroups satisfy a Tits alternative.

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Full text: http://www.ma.hw.ac.uk/~jim/preprint6.ps.Z


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