Smoothly slice knots with smoothly non-approximable topological slice discs
arXiv:2506.03705
Abstract
We construct infinitely many smoothly slice knots having topological slice discs that are non-approximable by smooth slice discs.
4 pages, 1 figure, to appear in Proc. Amer. Math. Soc, Incorporated feedback from Gompf; allowed an isotopy in the definition of non-approximable discs