Transactions of the American Mathematical Society

Author(s): Oana M. Dragulete; Tudor S. Ratiu; Miguel Rodríguez-Olmos
Journal: Trans. Amer. Math. Soc. 359 (2007), 4209-4235.
MSC (2000): Primary 53D10, 53D20
Posted: April 11, 2007
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Abstract: This paper studies singular contact reduction for cosphere bundles at the zero value of the momentum map. A stratification of the singular quotient, finer than the contact one and better adapted to the bundle structure of the problem, is obtained. The strata of this new stratification are a collection of cosphere bundles and coisotropic or Legendrian submanifolds of their corresponding contact components.

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Oana M. Dragulete
Affiliation: Section de mathématiques, EPFL, CH-1015 Lausanne, Switzerland and Department of Mathematics, University ``Politehnica'' of Bucharest, Romania
Email: oana.dragulete@epfl.ch

Tudor S. Ratiu
Affiliation: Section de mathématiques, EPFL, CH-1015 Lausanne, Switzerland
Email: tudor.ratiu@epfl.ch

Miguel Rodríguez-Olmos
Affiliation: Section de mathématiques, EPFL, CH-1015 Lausanne, Switzerland
Email: miguel.rodriguez@epfl.ch

DOI: 10.1090/S0002-9947-07-04229-8
PII: S 0002-9947(07)04229-8
Keywords: Contact manifold, cotangent, cosphere bundle, momentum map, singular reduction.
Received by editor(s): June 30, 2005
Posted: April 11, 2007
Additional Notes: The first and the second authors thank the Swiss National Science Foundation for partial support
Copyright of article: Copyright 2007, American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.

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