|Affiliation||Nagoya City University|
|Time||Jan 9 13:50~14:30|
|Title||Index polynomial invariants of virtual knots and twisted knots.|
The index polynomial is an invariant of a virtual knot defined by. Y. H. Im, K. Lee, and S. Y. Lee. It is defined by using virtual crossings. We show that the invariant can be calculated by using real crossings, instead of virtual ones. This interpretation enables us to extend the invariant of virtual knots to that of twisted knots.