4 papers
-Alexander polynomial for -manifolds
Yuanyuan Bao, Noboru Ito
As an extension of Reshetikhin and Turaev's invariant, Costantino, Geer and Patureau-Mirand constructed -manifold invariants in the setting of relative -modular categories, w…
Alexander polynomial and spanning trees
Yuanyuan Bao, Zhongtao Wu
Inspired by the combinatorial constructions in earlier work of the authors that generalized the classical Alexander polynomial to a large class of spatial graphs with a balanced we…
Polynomial splittings of Ozsvath and Szabo's d-invariant
Yuanyuan Bao
For any rational homology 3-sphere and one of its spin^{c}-structures, Ozsvath and Szabo defined a topological invariant, called d-invariant. Given a knot in the 3-sphere, the d-in…
On knots having zero negative unknotting number
Yuanyuan Bao
A knot in the 3-sphere is said to have zero negative unknotting number if it can be transformed into the unknot by performing only positive crossing changes. In this paper, we prov…