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We construct a finitely presented group with quadratic Dehn function and undecidable conjugacy problem. This solves E. Rips' problem formulated in 1992. v2: misprints corrected. v3: lemmas 4.7, 4.10 corrected, more misprints fixed.
Comment: 83 p
Comment: 83 p
Externí odkaz:
http://arxiv.org/abs/1809.00280