Talk:Von Neumann conjecture

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Details of the recent work, please! Charles Matthews 06:28, 18 May 2004 (UTC)

So I have found that Sapir and Olshanskii in 2000 constructed a first finitely-presented counterexample. But the first counterexample might be much older (Olshanskii 1980)? Charles Matthews 07:02, 18 May 2004 (UTC)

You are quite correct - the first counterexample (Tarski monster) was indeed due to Ol'shanskii in 1980, and it is only the fp weakening of the conjecture that is "recent". I've added something on the history, and corrected the misleading impression I gave in Thompson groups. Best wishes, Cambyses 20:08, 18 May 2004 (UTC)

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