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The Moutard transformation: an algebraic formalism via pseudodifferential operators and applications

We consider the Moutard transformation which is a two-dimensional version of the well-known Darboux transformation. We give an algebraic interpretation of the Moutard transformation as a conjugation in an appropriate ring and the corresponding version of the algebro-geometric formalism for two-dimensional Schroedinger operators. An application to some problems of the spectral theory of two-dimensional Schroedinger operators and to the $(2+1)$-dimensional Novikov--Veselov equation is sketched.

preprint2009arXivOpen access
I. A. TaimanovS. P. Tsarev
math-phmath.MP
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I. A. TaimanovS. P. Tsarev

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