Spectrum of the Kohn Laplacian on the Rossi sphere

Tawfik Abbas, Madelyne M. Brown, Ravikumar Ramasami +1

We study the spectrum of the Kohn Laplacian ${\square }_b^t$ on the Rossi example $({\mathbb{S}}^3,{\mathcal{L}}_t)$. In particular we show that $0$ is in the essential spectrum of $\squ…