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Questions about Kähler manifolds and Kähler metrics.

4 votes

Extension of strictly plurisubharmonic functions on a Kähler manifold

No, in general. A trivial reason is that $f$ may not extend to a smooth function in a neighbourhood of $\overline{M\setminus A}$, but you can easily get around that by asking that $f$ agree with $h$ …
Tim Perutz's user avatar
  • 13.2k
5 votes
Accepted

Clifford Action for Kahler Manifolds

You ask for a short-cut, and I'm going to interpret this as asking "How can I see that on a Kaehler manifold $X$ the forms $\Omega^{0,\bullet}_X$ are a complex Clifford module, without first going thr …
Tim Perutz's user avatar
  • 13.2k
43 votes
Accepted

Kähler structure on cotangent bundle?

This is true! I assume $M$ compact. Method 1. Real algebraic geometry. Cf. Fukaya, Seidel, and Smith - Exact Lagrangian submanifolds in simply-connected cotangent bundles. By a version of the Nash–To …
Tim Perutz's user avatar
  • 13.2k