Browsing Scholarly Works by Author "He, Weiyong"

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BIHARMONIC ALMOST COMPLEX STRUCTURES

He, Weiyong (Cornell University, 2020-06-10)

We introduce the notion of \emph{biharmonic almost complex structure} on a compact almost Hermitian manifold and we study its regularity and existence in dimension four. First we show that there always exist smooth ...
The Geometry of quasi-Sasaki Manifolds

Welly, Adam (University of Oregon, 2016-10-27)

Let (M,g) be a quasi-Sasaki manifold with Reeb vector field xi. Our goal is to understand the structure of M when g is an Einstein metric. Assuming that the S^1 action induced by xi is locally free or assuming a certain ...