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In 1996, Gersten proved that finitely presented subgroups of a word hyperbolic group of integral cohomological dimension 2 are hyperbolic. We use isoperimetric inequalities over arbitrary rings to extend this result to any ring. In particular, we stu
Externí odkaz:
http://arxiv.org/abs/2405.19866
Autor:
Bader, Shaked, Lazarovich, Nir
Publikováno v:
Geom Dedicata 218, 5 (2024)
Median spaces are spaces in which for every three points the three intervals between them intersect at a single point. It is well known that rank-1 affine buildings are median spaces, but by a result of Haettel, higher rank buildings are not even coa
Externí odkaz:
http://arxiv.org/abs/2212.00894
Autor:
Bader, Shaked, Lazarovich, Nir
Publikováno v:
Geometriae Dedicata; Feb2024, Vol. 218 Issue 1, p1-31, 31p
