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Splitting numbers for links and Heegaard Floer homology


Speaker: Evgeny Gorsky, UC Davis
Location: 2112 MSB
Start time: Wed, Nov 23 2016, 3:10PM

The splitting number of a link is the minimal number of crossings between different components that should be changed to transform it to a split link. I will describe a lower bound for the splitting number using Heegaard Floer homology and present an infinite family of links with vanishing linking numbers and arbitrary large splitting numbers. The talk is based on a joint work with Maciej Borodzik.