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Paper   IPM / M / 16142
School of Mathematics
  Title:   On sign assignments in link Floer homology
  Author(s):  Eaman Eftekhary
  Status:   To Appear
  Journal: Mich. Math. J.
  Supported by:  IPM
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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