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A Gordon-Litherland form for ribbon surfaces

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HTLW02 - 3-manifold workshop

Co-authors: Josh Greene and Saso Strle

I will describe work in progress aimed at generalising the Gordon-Litherland form to the case of properly embedded surfaces in the four-ball and the four-sphere.  I will also discuss a motivating non-application involving concordance invariants of links which lie on definite surfaces in S^4.


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

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S2 Seminar Room, Alison Richard Building, Cambridge, 7 West Rd. Hybrid: JDB Teaching Room, Engineering Department or Zoom: https://cam-ac-uk.zoom.us/meeting/register/tZ0tfuCvrDgjG9WNY52TL0qsu7PqO484Pad5 Hicks & Mead Rooms, University Centre, Granta Place

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