# Differential Geometry Working Seminar

Tuesday, December 6, 2022 — 2:00 PM EST

Paul Cusson, Department of Pure Mathematics, University of Waterloo

"A proof of the Newlander-Nirenberg Theorem"

The Newlander-Nirenberg Theorem is a result that determines exactly when an almost complex manifold is actually a complex manifold. That is, given an almost complex structure $J$ on a manifold, it is integrable if and only if a certain PDE is satisfied, namely the vanishing of the Nijenhuis tensor. We will look at a proof of this theorem given by Malgrange, which uses results from the theory of nonlinear systems of elliptic PDEs.

MC 5403

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