Balleans of bounded geometry and G-spaces
Algebra and discrete mathematics, no. 2 (2008), pp. 101-108
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A ballean (or a coarse structure) is a set endowed with some family of subsets which are called the balls. The properties of the family of balls are postulated in such a way that a ballean can be considered as an asymptotical counterpart of a uniform topological space.
We prove that every ballean of bounded geometry is coarsely equivalent to a ballean on some set $X$ determined by some group of permutations of $X$.
Keywords:
ballean, coarse equivalence, G-space.
@article{ADM_2008_2_a6,
author = {Igor V. Protasov},
title = {Balleans of bounded geometry and {G-spaces}},
journal = {Algebra and discrete mathematics},
pages = {101--108},
publisher = {mathdoc},
number = {2},
year = {2008},
language = {en},
url = {http://geodesic.mathdoc.fr/item/ADM_2008_2_a6/}
}
Igor V. Protasov. Balleans of bounded geometry and G-spaces. Algebra and discrete mathematics, no. 2 (2008), pp. 101-108. http://geodesic.mathdoc.fr/item/ADM_2008_2_a6/