University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Correction terms and the non-orientable 4-genus

Correction terms and the non-orientable 4-genus

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact info@newton.ac.uk.

HTL - Homology theories in low dimensional topology

Given a knot K in the 3-sphere, we use Heegaard Floer d-invariants to give lower bounds on the first Betti number of a non-orientable surface in the 4-ball with boundary K, strengthening earlier work of Batson. An amusing feature of our bound is its superadditivity with respect to connected sums. This is joint work with Marco Marengon.



This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2017 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity