On the first secondary invariant of Molino's central sheaf

Tom 64 / 1996

Jesús Álvarez López Annales Polonici Mathematici 64 (1996), 253-265 DOI: 10.4064/ap-64-3-253-265

Streszczenie

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.

Autorzy

  • Jesús Álvarez López

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