Compatible Poisson brackets of hydrodynamic type

2000/05/23 by E. V. Ferapontov
Mathematics · #math.DG

paper · pdf · doi:10.1088/0305-4470/34/11/328

14 pages

arxiv created 2000/05/23 · arxiv updated 2009/11/30

Abstract

Some general properties of compatible Poisson brackets of hydrodynamic type are discussed, in particular: (1) an invariant differential-geometric criterion of the compatibility based on the Nijenhuis tensor; (2) the Lax pair with a spectral parameter governing compatible Poisson brackets in the diagonalizable case; (3) the connection of this problem with the class of surfaces in Euclidean space which possess nontrivial deformations preserving the Weingarten operator.

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