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Groups which are an infinite cyclic extension of a unique base group
Published online by Cambridge University Press: 09 April 2009
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Let G be a group which has exactly one normal subgroup N with G/N infinite cyclic; clearly such a group is an HNN group with base N and stable letter t, where t induces an automorphism θ, of N under conjugation. We call such a group G a unique base group with automorphism θ, and base N.
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- Copyright © Australian Mathematical Society 1977
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