A combinatorial definition of Heegaard-Floer homology for links
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We give a completely combinatorial definition and proof of invariance
of Heegaard-Floer homology for links in the 3-sphere.  The definition
is based on a grid-link presentation of the link, also known as an arc
presentation.

Parts of this talk are work of Manolescu, Ozsváth, and Sarkar, and
parts are joint work with Manolescu, Ozsváth, and Szabó.
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