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Entropy In Classical And Quantum Systems

Theodore Philippakis, George Raptis

Published Jan 24, 2026• 0 citations
Publisher

Abstract

Extended Study Co-ordinated by Dr Theodore Philippakis
DOI
10.5281/zenodo.18359414

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The solution of a problem in classical dynamics can be described, as Hamilton showed in 1834, by its Principal Function. Considering for simplicity a conservative problem with one degree of freedom, let the co-ordinate at the instant t be q, and let the Lagrangean function be L. Let Q be the value of the co-ordinate at a previous instant T. Let the quantity , after the integration has been performed, be expressed in terms of (q, Q, t — T), and let the function thus obtained, which is Hamilton's Principal Function, be denoted by W.