A Sharp Upper Bound for Region Unknotting Number of Torus Knots
arXiv:1211.6909 · doi:10.1142/S0218216513500193
Abstract
Region crossing change for a knot or a proper link is an unknotting operation. In this paper, we provide a sharp upper bound on the region unknotting number for a large class of torus knots and proper links. Also, we discuss conditions on torus links to be proper.
17 pages, 2 figures