3 papers
math.GT2026
Delta-Unknotting Number for Montesinos Knots
Kazumichi Nakamura
The -unknotting number for a knot is defined as the minimum number of -moves needed to deform the knot into the trivial knot. In this paper, we determine the -unknotting n…
math.GT2026
Delta-Unknotting Number for Pretzel Knots
Kazumichi Nakamura
The -unknotting number for a knot is defined as the minimum number of -moves needed to deform the knot into the trivial knot. It is known that, for positive pretzel knots, th…
math.GT2025
Delta-Unknotting Number for Two-Bridge Knots
Kazumichi Nakamura
The -unknotting number for a knot is defined as the minimum number of -moves needed to deform the knot into the trivial knot. We determine the -unknotting numbers for two-…