Virtualized Delta, sharp, and pass moves for oriented virtual knots and links
arXiv:2401.13195
Abstract
We study virtualized Delta, sharp, and pass moves for oriented virtual links, and give necessary and sufficient conditions for two oriented virtual links to be related by the local moves. In particular, they are unknotting operations for oriented virtual knots. We provide lower bounds for the unknotting numbers and prove that they are best possible.
20 pages