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The method of noncommutative integration for linear differential equations. Functional algebras and noncommutative dimensional reduction

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Abstract

The method of noncommutative integration for linear partial differential equations [1] is extended to the case of the so-called functional algebras for which the commutators of their generators are nonlinear functions of the same generators. The linear functions correspond to Lie algebras, whereas the quadratics are associated with the so-called quadratic algebras having wide applications in quantum field theory. A nontrivial example of integration of the Klein-Gordon equation in a curved space not allowing separation of variables is considered. A classification of four- and five-dimensional quadratic algebras is performed.

A method of dimensional reduction for noncommutatively integrable many-dimensional partial differential equations is suggested. Generally, the reduced equation has a complicated functional symmetry algebra. The method permits integration of the reduced equation without the use of the explicit form of its functional algebra.

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Authors and Affiliations

  1. Tomsk State University, USSR

    A. V. Shapovalov & I. V. Shirokov

  2. Omsk State University, USSR

    A. V. Shapovalov & I. V. Shirokov

Authors
  1. A. V. Shapovalov
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  2. I. V. Shirokov
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 106, No. 1, pp. 3–15, January, 1996.

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Shapovalov, A.V., Shirokov, I.V. The method of noncommutative integration for linear differential equations. Functional algebras and noncommutative dimensional reduction. Theor Math Phys 106, 1–10 (1996). https://doi.org/10.1007/BF02070758

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  • DOI: https://doi.org/10.1007/BF02070758

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