Abstract
The notion of an open collar is generalized to that of a pseudo-collar. Important properties and examples are discussed. The main result gives conditions which guarantee the existence of a pseudo-collar structure on the end of an open –manifold (). This paper may be viewed as a generalization of Siebenmann’s famous collaring theorem to open manifolds with non-stable fundamental group systems at infinity.
Citation
Craig R Guilbault. "Manifolds with non-stable fundamental groups at infinity." Geom. Topol. 4 (1) 537 - 579, 2000. https://doi.org/10.2140/gt.2000.4.537
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