A sign assignment in totally twisted Khovanov homology
arXiv:1109.4982 · doi:10.2140/agt.2014.14.753
Abstract
We lift the characteristic-2 totally twisted Khovanov homology of Roberts and Jaeger to a theory with integer coefficients. The result is a complex computing reduced odd Khovanov homology for knots. This complex is equivalent to a spanning-tree complex whose differential is explicit modulo a sign ambiguity coming from the need to choose a sign assignment in the definition of odd Khovanov homology.
12 pages; 5 figures