Topology Atlas | Conferences

Knots in Washington XLIV
April 28-30, 2017
George Washington University
Washington, DC, USA

Organizers
Valentina Harizanov (GWU), Jozef H. Przytycki (GWU), Yongwu Rong (GWU), Radmila Sazdanovic (NCSU), Alexander Shumakovitch (GWU), Hao Wu (GWU)

Conference Homepage


On the extended bracket polynomial for virtual knots and links
by
Sergei Chmutov
Ohio State University, Mansfield

I will report a result of my student Benjamin O'Connor obtained in a summer program "Knots and Graphs" in 2012:

https://people.math.osu.edu/chmutov.1/wor-gr-su12/wor-gr.htm

He found a gap in L.Kauffnam's proof of isotopy invariance of the extended bracket polynomial for virtual

knots and links. I will show his counterexample and explain why the proof does not work.

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Date received: April 11, 2017

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