Khovanov's conjecture over Z[c]
arXiv:math/0308151
Abstract
We disprove the conjecture of M. Khovanov (math.QA/9908171) on the functoriality of his link homology with polynomial coefficients. This is in contrast to the case of integer coefficients, where functoriality was proved in math.GT/0206303 .
8 pages, 10 figures