Singular link concordance implies link homotopy in codimension $\ge 3$

Abstract

We prove the analogue of the Concordance Implies Isotopy in Codimension $\ge 3$ Theorem for link maps, together with some other its singular analogues. In the case of spherical link maps, a stronger result was independently obtained by P. Teichner (by different methods).

12 pages, 3 figures