Results 121 to 130 of about 189,122 (232)

Spaces of dimension three with congruence

open access: yesLe Matematiche, 2004
It is well known that every Euclidean plane (E, L, α, ≡) is isomorphic to an affine plane AG(2,K) over a Pythagorean ordered commutative field K .There is a corrisponding theorem for hyperbolic panes (cf. [2]).
Alexander Kreuzer
doaj  

Hyperbolic one-relator groups

open access: yesCanadian Journal of Mathematics
Abstract We introduce two families of two-generator one-relator groups called primitive extension groups and show that a one-relator group is hyperbolic if its primitive extension subgroups are hyperbolic. This reduces the problem of characterizing hyperbolic one-relator groups to characterizing hyperbolic primitive extension groups.
openaire   +3 more sources

Hyperbolic groups with 1-dimensional boundary

open access: green, 1998
Michael Kapovich, Bruce Kleiner
openalex   +2 more sources

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