Key points are not available for this paper at this time.
A knot is said to be slice if it bounds a smooth properly embedded disk in B⁴. We demonstrate that the Conway knot is not slice. This completes the classification of slice knots under 13 crossings and gives the first example of a non-slice knot which is both topologically slice and a positive mutant of a slice knot.
Lisa Piccirillo (Thu,) studied this question.