Dolbeault cohomology for almost complex manifolds

By J. Cirici, Scott O. Wilson. 2018

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This paper extends Dolbeault cohomology and its surrounding theory to arbitrary almost complex manifolds. We define a spectral sequence converging to ordinary cohomology, whose first page is the Dolbeault cohomology, and develop a harmonic theory which injects into Dolbeault cohomology. Lie-theoretic analogues of the theory are developed which yield important calculational tools for Lie groups and nilmanifolds. Finally, we study applications to maximally non-integrable manifolds, including nearly Kahler $6$-manifolds, and show Dolbeault cohomology can be used to prohibit the existence of nearly Kahler metrics.

View Paper: https://www.semanticscholar.org/paper/ac5f5b760a99b78650ce4a7848239f1bf919ad15