On the slice genus of links.
The Homflypt skein module of a connected sum of 3-manifolds.
3-manifold invariants and periodicity of homology spheres.
On the Slice Genus of Knots.
The parity of the Maslov index and the even cobordism category
We give a formula for the parity of the Maslov index of a triple of Lagrangian subspaces of a skew symmetric bilinear form over ℝ. We define an index two subcategory (the even subcategory) of a 3-dimensional cobordism category. The objects of the category are surfaces equipped with Lagrangian subspaces of their real first homology. This generalizes a result of the first author where surfaces are equipped with Lagrangian subspaces of their rational first homology.
Integral lattices in TQFT
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