Geodesic
On the first secondary invariant of Molino's central sheaf
Annales Polonici Mathematici, Tome 64 (1996) no. 3, pp. 253-265.

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For a Riemannian foliation on a closed manifold, the first secondary invariant of Molino's central sheaf is an obstruction to tautness. Another obstruction is the class defined by the basic component of the mean curvature with respect to some metric. Both obstructions are proved to be the same up to a constant, and other geometric properties are also proved to be equivalent to tautness.
DOI : 10.4064/ap-64-3-253-265
Keywords: foliation, taut

Jesús Álvarez López 1

1 
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Jesús Álvarez López. On the first secondary invariant of Molino's central sheaf. Annales Polonici Mathematici, Tome 64 (1996) no. 3, pp. 253-265. doi : 10.4064/ap-64-3-253-265. http://geodesic.mathdoc.fr/articles/10.4064/ap-64-3-253-265/

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