When is zero in the numerical range of a composition operator?

Bourdon P, Shapiro J. When is zero in the numerical range of a composition operator?. Integral Equations and Operator Theory. 2002;44(4):410–441.

Last updated on 10/29/2020

Recent Publications

MacCluer B, Kriete T, Bourdon P. Differential Equations: Techniques, Theory, and Applications. American Mathematical Society. Forthcoming Forthcoming.
Bourdon P. Spectra of composition operators with symbols in S (2). Journal of Operator Theory 75. 2016;75:21–48.
Bourdon P, Noor W. Complex symmetry of invertible composition operators. Journal of Mathematical Analysis and Applications. 2015;429(1):105–110.
Bourdon P. Invertible weighted composition operators. Proceedings of the American Mathematical Society. 2014;142(1):289–299.