Non-compactness of the Neumann operator for the Kohn Laplacian on the Heisenberg ball
Robert K. Hladky · arXiv (Cornell University) · 2013
For $1\leq q \leq n-2$, we provide explicit examples to demonstrate non-compactness of the Neumann operator for the Kohn Laplacian acting on $L^2$ $(0,q)$-forms on the unit ball in $(2n+1)$-dimensional Heisenberg space.