Later in his career, he worked on solid-state physics, molecular physics, statistical physics, and other areas of theoretical physics.
en.wikipedia.org In theoretical physics, however, this scruple can be set aside, by a process called nondimensionalization.
en.wikipedia.org Although related to theoretical physics, mathematical physics in this sense emphasizes the mathematical rigour of the same type as found in mathematics.
en.wikipedia.org Computer science, computational science, population genetics, operations research, cryptology, econometrics, theoretical physics, and actuarial science are other fields that may be considered part of mathematical sciences.
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