Homotopy ribbon concordance and Alexander polynomials
arXiv:1907.09031
Abstract
We show that if a link J in the 3-sphere is homotopy ribbon concordant to a link L then the Alexander polynomial of L divides the Alexander polynomial of J.
7 pages. Version 2 extends the result to Alexander polynomials of links. Version 3 incorporates referee's comments, to appear in Archiv der Mathematik