Alternating sum formulae for the determinant and other link invariants
Geometric Topology
2010-08-03 v2 Combinatorics
Abstract
A classical result states that the determinant of an alternating link is equal to the number of spanning trees in a checkerboard graph of an alternating connected projection of the link. We generalize this result to show that the determinant is the alternating sum of the number of quasi-trees of genus j of the dessin of a non-alternating link. Furthermore, we obtain formulas for other link invariants by counting quantities on dessins. In particular we will show that the -th coefficient of the Jones polynomial is given by sub-dessins of genus less or equal to .
Keywords
Cite
@article{arxiv.math/0611025,
title = {Alternating sum formulae for the determinant and other link invariants},
author = {Oliver T. Dasbach and David Futer and Efstratia Kalfagianni and Xiao-Song Lin and Neal W. Stoltzfus},
journal= {arXiv preprint arXiv:math/0611025},
year = {2010}
}
Comments
18 pages, 8 figures; extended version