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On time evolutions associated with the nonstationary Schrödinger equation

A. K. Pogrebkov
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Abstract

The set of integrable symmetries of the nonstationary Schrödinger equation is shown to admit a natural decomposition into subsets of mutually commuting symmetries. Hierarchies of time evolutions associated with each of these subsets ultimately lead to nonlinear (possibly, operator) equations of the Kadomtsev--Petviashvili I type or its higher analogues, thus demonstrating that the linear problem itself constructively determines the associated nonlinear integrable evolution equations and their hierarchies.

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A. K. Pogrebkov. 1999-02-09. On time evolutions associated with the nonstationary Schrödinger equation. https://arxiv.org/abs/math-ph/9902014

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