# Absolute gradings on ECH and Heegaard Floer homology

@article{Ramos2014AbsoluteGO,
title={Absolute gradings on ECH and Heegaard Floer homology},
author={Vinicius G. B. Ramos},
journal={arXiv: Symplectic Geometry},
year={2014}
}
In joint work with Yang Huang, we defined a canonical absolute grading on Heegaard Floer homology by homotopy classes of oriented 2-plane fields. A similar grading was defined on embedded contact homology by Michael Hutchings. In this paper we show that the isomorphism between these homology theories defined by Colin-Ghiggini-Honda preserves this grading.
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