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Abstract
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The purpose of this paper is to investigate torsion-free groups which act properly and
cocompactly on CAT(0) metric spaces which have isolated flats, as defined by
Hruska. Our approach is to seek results analogous to those of Sela, Kharlampovich
and Miasnikov for free groups and to those of Sela (and Rips and Sela) for
torsion-free hyperbolic groups.
This paper is the first in a series. In this paper we extract an
–tree
from an asymptotic cone of certain CAT(0) spaces. This is analogous to a
construction of Paulin, and allows a great deal of algebraic information to be
inferred, most of which is left to future work.
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Keywords
CAT(0) spaces, isolated flats, limit groups,
$\mathbb{R}$–trees
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Mathematical Subject Classification 2000
Primary: 20F65
Secondary: 20F67, 20E08, 57M07
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Publication
Received: 14 January 2005
Accepted: 20 September 2005
Published: 6 October 2005
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