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math.DG2007★ 4 cited
Lie Algebroids and Classification Problems in Geometry
Rui Loja Fernandes, Ivan Struchiner
We show how one can associate to a given class of finite type G-structures a classifying Lie algebroid. The corresponding Lie groupoid gives models for the different geometries tha…
math.DG2004
Transgression forms in dimension 4
Isabel M. C. Salavessa, Ana Pereira do Vale
We compute explicit transgression forms for the Euler and Pontrjagin classes of a Riemannian manifold of dimension 4 under a conformal change of the metric, or a change to a Ri…