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Exactness and Uniform Embeddability of Discrete Groups |
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| Authors: | Guentner Erik; Kaminker Jerome |
| Institution: | Mathematics Department, University of Hawai'i M noa, 2565 McCarthy Mall, Honolulu, HI 96822, USA, erik{at}math.hawaii.eduDepartment of Mathematical Sciences, Indiana University – Purdue University 402 N. Blackford Street, Indianapolis, IN 46202-3216, USA, kaminker{at}math.iupui.edu |
| Abstract: | A numerical quasi-isometry invariant R( ) of a finitely generatedgroup is defined whose values parametrize the difference between being uniformly embeddable in a Hilbert space and  () being exact. |
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