activity
20152021
most citedClassification of string links up to -moves and link-homotopy

2 citations · 8 across the 12 of their papers we have counts for

collaborators

12 papers

math.GT2021

CF-moves for virtual links

Kodai Wada

Oikawa defined an unknotting operation on virtual knots, called a CF-move, and gave a classification of 2-component virtual links up to CF-moves by the virtual linking number and h…

math.GT2020

The Dabkowski-Sahi invariant and -moves for links

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

Dabkowski and Sahi defined an invariant of a link in the -sphere, which is preserved under -moves. This invariant is a quotient of the fundamental group of the complement of…

math.GT2020★ 1 cited

Combinatorial approach to Milnor invariants of welded links

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

For a classical link, Milnor defined a family of isotopy invariants, called Milnor -invariants. Recently, Chrisman extended Milnor -invariants to welded lin…

math.GT2020★ 1 cited

Classification of -component virtual links up to -moves

Jean-Baptiste Meilhan, Shin Satoh, Kodai Wada

The -move is a local move generated by forbidden moves in virtual knot theory. This move was introduced by Taniguchi and the second author, who showed that it characterizes the…

math.GT2019

Milnor invariants, -moves and -moves for welded string links

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

In a previous paper, the authors proved that Milnor link-homotopy invariants modulo classify classical string links up to -move and link-homotopy. As analogues to the welde…

math.GT2019★ 2 cited

Classification of string links up to -moves and link-homotopy

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

Two string links are equivalent up to -moves and link-homotopy if and only if their all Milnor link-homotopy invariants are congruent modulo . Moreover, the set of the equiv…

math.GT2018★ 1 cited

Generalized virtualization on welded links

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

Let be a positive integer. The aim of this paper is to study two local moves and on welded links, which are generalizations of the crossing virtualization. We sh…

math.GT2018★ 1 cited

Burnside groups and -moves for links

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

Let be a positive integer. M. K. Dabkowski and J. H. Przytycki introduced the th Burnside group of links which is preserved by -moves, and proved that for any odd prime $…

math.GT2017★ 2 cited

Link invariants derived from multiplexing of crossings

Haruko A. Miyazawa, Kodai Wada, Akira Yasuhara

We introduce the multiplexing of a crossing, replacing a classical crossing of a virtual link diagram with multiple crossings which is a mixture of classical and virtual. For integ…

math.GT2016

Milnor invariants of covering links

Natsuka Kobayashi, Kodai Wada, Akira Yasuhara

We consider Milnor invariants for certain covering links as a generalization of covering linkage invariants formulated by R. Hartley and K. Murasugi. A set of Milnor invariants for…

math.GT2015

The Milnor invariants of clover links

Kodai Wada, Akira Yasuhara

J.P. Levine introduced a clover link to investigate the indeterminacy of the Milnor invariants of a link. It is shown that for a clover link, the Milnor numbers of length at most $…

math.GT2015

Milnor invariants and edge-homotopy classification of clover links

Kodai Wada

Given a clover link, we construct a bottom tangle by using a disk/band surface of the clover link. Since the Milnor number is already defined for a bottom tangle, we define the Mil…