On sign assignments in link Floer homology

Eaman Eftekhary

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arXiv · 1812.02374

On sign assignments in link Floer homology

Eaman Eftekhary

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Abstract

In this short note, we compare the combinatorial sign assignment of Manolescu, Ozsvath, Szabo and Thurston for grid homology of knots and links in 3-sphere with the sign assignment coming from a coherent system of orientations on Whitney disks. Although these constructions produce different signs, a small modification of the convention in either of the two methods results in identical sign assignments, and thus identical chain complexes.

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BibTeX RIS

Eaman Eftekhary. 2018-12-06. On sign assignments in link Floer homology. https://arxiv.org/abs/1812.02374

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