Zero-surgery characterizes infinitely many knots

• DOI: 10.4310/mrl.250210230206
• Publication Date: 2025-02-10T17:07:30Z
• Authors: John A. Baldwin; Steven Sivek
• Keywords: Zero (linguistics)

9 pages, 1 figure; v2: minor changes, accepted version<br/>We prove that 0 is a characterizing slope for infinitely many knots, namely the genus-1 knots whose knot Floer homology is 2-dimensional in the top Alexander grading, which we classified in recent work and which include all $(-3,3,2n+1)$ pretzel knots. This was previously only known for $5_2$ and its mirror, as a corollary of that classification, and for the unknot, trefoils, and the figure eight by work of Gabai from 1987.<br/>