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math.DG2004
A class of Poisson-Nijenhuis structures on a tangent bundle
W. Sarlet, F. Vermeire
Equipping the tangent bundle TQ of a manifold with a symplectic form coming from a regular Lagrangian L, we explore how to obtain a Poisson-Nijenhuis structure from a given type (1…
math.DG2003
The Berwald-type linearisation of generalised connections
Tom Mestdag, Willy Sarlet
We study the existence of a natural `linearisation' process for generalised connections on an affine bundle. It is shown that this leads to an affine generalised connection over a…