Document Type

Article

Publication Date

2-23-2001

Abstract

Recently, Rips produced an example of a double of two free groups which has unsolvable generalized word problem. In this paper, we show that Rips's example fits into a large class of doubles of groups, each member of which contains F2×F2 and therefore has unsolvable generalized word problem and is incoherent. © 2001 Elsevier Science B.V.

Publication Source (Journal or Book title)

Journal of Pure and Applied Algebra

First Page

147

Last Page

151

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