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Seminar

4-ended tangles, Heegaard Floer homology and norm detection

Speaker
Fraser Binns, Princeton University
Date
Tue, Jan 20 2026, 4:00pm
Location
383N
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Link Floer homology is a powerful invariant of links due to Ozsváth and Szabó. One of its most striking properties is that it detects each link’s Thurston norm, a result due to Ozsváth and Szabó. In this talk I will discuss generalizations of this result to the context of 4-ended tangles, as well as some tangle detection results. This is joint work in progress with Subhankar Dey and Claudius Zibrowius.