Geodesic
SECOND-ORDER DEFORMATIONS OF HYDRODYNAMIC-TYPE POISSON BRACKETS
Glasgow mathematical journal, Tome 51 (2009) no. A, pp. 75-82

Voir la notice de l'article provenant de la source Cambridge University Press

This paper is concerned with the properties of differential-geometric-type Poisson brackets specified by a differential operator of degree 2. It also considers the conditions required for such a Poisson bracket to form a bi-Hamiltonian structure with a hydrodynamic-type Poisson bracket. 
FERGUSON, JAMES T. SECOND-ORDER DEFORMATIONS OF HYDRODYNAMIC-TYPE POISSON BRACKETS. Glasgow mathematical journal, Tome 51 (2009) no. A, pp. 75-82. doi: 10.1017/S0017089508004795
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