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Rigidity of the Minimal Grope Group

Matija Cencelj·Katsuya Eda·Ales Vavpetic
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Abstract

We give a systematic definition of the fundamental groups of gropes, which we call grope groups. We show that there exists a nontrivial homomorphism from the minimal grope group M to another grope group G only if G is the free product of M with another grope group.

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Matija Cencelj, Katsuya Eda, Ales Vavpetic. 2006-08-04. Rigidity of the Minimal Grope Group. https://doi.org/10.1142/s0218196713500070

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