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On the non-regularity of tangent sphere bundles

Published online by Cambridge University Press:  14 November 2011

David E. Blair
Affiliation:
Department of Mathematics, Michigan State University, East Lansing, Michigan, U.S.A..

Synopsis

Classically the tangent sphere bundles have formed a large class of contact manifolds; their contact structures are not in general regular, however. Specifically we prove that the natural contact structure on the tangent sphere bundle of a compact Riemannian manifold of non-positive constant curvature is not regular.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1978

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References

1Blair, D. E.. On the non-existence of flat contact metric structures. Tohoku Math. J. 28 (1976), 373379.Google Scholar
2Blair, D. E.. Contact Manifolds in Riemannian Geometry. Lecture Notes in Mathematics 509 (Berlin: Springer, 1976).Google Scholar
3Boothby, W. M. and Wang, H. C.. On contact manifolds. Ann. of Math. 68 (1958), 721734.Google Scholar
4Dombrowski, P.. On the geometry of the tangent bundle. J. Reine Angew. Math. 210 (1962), 7388.CrossRefGoogle Scholar
5Sasaki, S.. On the differential geometry of tangent bundles of Riemannian manifolds. Tohoku Math. J. 10 (1958), 338354.CrossRefGoogle Scholar
6Sasaki, S.. On differentiable manifolds with certain structures which are closely related to almost contact structure I. Tohoku Math. J. 12 (1960), 459476.Google Scholar
7Steenrod, N.. Topology of Fibre Bundles. (Princeton Univ. Press, 1951).Google Scholar
8Tachibana, S. and Okumura, M.. On the almost complex structure of tangent bundles of Riemannian spaces. Tohoku Math. J. 14 (1962), 156161.Google Scholar
9Tanno, S.. Sasakian manifolds with constant φ-holomorphic sectional curvature. Tôhoku Math. J. 21 (1969), 501507.Google Scholar
10Tashiro, Y.. On contact structures of tangent sphere bundles. Tôhoku Math. J. 21 (1969), 117143.Google Scholar
11Yano, K. and Ishihara, S.. Tangent and Cotangent Bundles. (New York: Dekker, 1973).Google Scholar