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On transversal infinitesimal automorphisms for harmonic foliations

✍ Scribed by Philippe Tondeur; Gabor Toth


Publisher
Springer
Year
1987
Tongue
English
Weight
262 KB
Volume
24
Category
Article
ISSN
0046-5755

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✦ Synopsis


In this paper we consider a harmonic Riemannian foliation .:~, and study the transversal infinitesimal automorphisms of .~ with certain additional properties like being transversal conformal or Killing (= metric). Such automorphisms (modulo Killing automorphisms) are related to the stability of.~. A special stud)' is made for the case of a foliation with constant transversal scalar curvature, and more particularly with transversal Ricci curvature proportional to the transversal metric (Einstein foliation).


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Lower bounds for the eigenvalue of the t
✍ Seoung Dal Jung; Tae Ho Kang πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 140 KB

On a foliated Riemannian manifold with a KΓ€hler spin foliation, we give a lower bound for the square of the eigenvalues of the transversal Dirac operator. We prove, in the limiting case, that the foliation is a minimal, transversally Einsteinian of odd complex dimension with nonnegative constant tra