Cm. Gordon, ON SPINES OF 3-MANIFOLDS WITH BOUNDARY, Journal of the Australian Mathematical Society. Series A. Pure mathematics and statistics, 55, 1993, pp. 132-136
Citations number
4
Categorie Soggetti
Mathematics, General","Statistic & Probability",Mathematics,"Statistic & Probability
We give a simple necessary and sufficient condition for the inclusion
map of a subpolyhedron into a compact 3-manifold with non-empty bounda
ry to be a homotopy equivalence.