抄録
It is known that any virtual knot can be deformed into the trivial knot by a finite sequence of forbidden moves. In this paper, we give the difference of the values obtained from some invariants constructed by Henrich between two virtual knots which can be transformed into each other by a single forbidden move. As a result, we obtain a lower bound of the unknotting number of a virtual knot by forbidden moves.
| 本文言語 | English |
|---|---|
| 論文番号 | 13500090 |
| ジャーナル | Journal of Knot Theory and its Ramifications |
| 巻 | 22 |
| 号 | 3 |
| DOI | |
| 出版ステータス | Published - 2013 3月 1 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 代数と数論