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math.SG2004
Semi-local invariants for non-resonnant Poisson structures on S1xRn
O. Brahic, J. P. Dufour
The purpose of this paper is to give a semi-local study along generic closed curves of zeros: we formally classify Poisson structures defined in a neighborhood of Gamma:=S^1x{0} in…
math.SG2002★ 1 cited
Nondegeneracy of the Lie algebra aff(n)
Jean-Paul Dufour, Nguyen Tien Zung
We show that , the Lie algebra of affine transformations of is formally and analytically nondegenerate in the sense of A. Weinstein. This means…