Digital Library of Mathematical Functions
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William P. Reinhardt

Photograph of William P. Reinhardt

William P. Reinhardt (b. 1942 in San Francisco, California) is Professor of Chemistry and Adjunct Professor of Physics at the University of Washington, Seattle. His undergraduate and graduate degrees are from the University of California at Berkeley and Harvard University, respectively. He is the Associate Editor for Chemistry for the DLMF project, and a frequent visitor to the NIST Physics Laboratory in Gaithersburg.

Reinhardt is a theoretical chemist and atomic physicist, who has always been interested in orthogonal polynomials and in the analyticity properties of the functions of mathematical physics. He has recently carried out research on non-linear dynamics of Bose–Einstein condensates that served to motivate his interest in elliptic functions. Older work on the scattering theory of the atomic Coulomb problem led to the discovery of new classes of orthogonal polynomials, new uses of old ones—and to his original ownership of a 1964 printing of the original AMS 55 NBS Handbook.

Reinhardt firmly believes that the Mandelbrot set is a special function, and notes with interest that the natural boundaries of analyticity of many “more normal” special functions are also fractals. This is closely connected with his interests in classical dynamical “chaos,” an area where he coauthored a book, Chaos in Atomic Physics, Cambridge University Press (1997), with Reinhold Blümel.

Reinhardt was elected a Fellow of Phi Beta Kappa in 1998 and of the American Association for the Advancement of Science in 1983. He was also National Lecturer for Sigma Xi in 1980–1982.

Reinhardt is coauthor of the following DLMF chapters