My research interests are operator theory (especially composition operators acting on spaces of analytic functions), function theory (analytic & harmonic), and quantum-information theory (superdense coding with partially entangled quantum particles). My teaching interests include active-learning strategies, assessement of learning (especially in calculus), and matthematical modeling in differential equations. In 1985, I earned my Ph.D. in mathematics from UNC-Chapel Hill. Since then I have held appointments at Michigan State University, Washington and Lee University, the University of Tennessee at Knoxville, and the University of Virginia.

## Recent Publications

Differential Equations: Techniques, Theory, and Applications. American Mathematical Society. Forthcoming.

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Spectra of composition operators with symbols in S (2). Journal of Operator Theory 75. 2016;75 :21-48.

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Complex symmetry of invertible composition operators. Journal of Mathematical Analysis and Applications. 2015;429 (1) :105–110.

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Invertible weighted composition operators. Proceedings of the American Mathematical Society. 2014;142 (1) :289–299.

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