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Heegaard Floer invariants of knots in the 4-sphere
by
Daniel Ruberman
Brandeis University
Coauthors: Adam Levine
We use a partially twisted version of Heegaard Floer homology to define invariants of 3-manifolds, generalizing the d-invariant of a rational homology sphere. A Seifert surface for an oriented knot in the 4-sphere has a canonical twisting, and its d-invariant turns out to depend only on the original knot.
Date received: September 17, 2016
Copyright © 2016 by the author(s). The author(s) of this work and the organizers of the conference have granted their consent to include this abstract in Topology Atlas. Document # cbnq-09.