Chern classes of spherical CR manifolds
نویسندگان
چکیده
We first construct closed spherical CR manifolds of dimension at least five having non-trivial Chern class with real coefficients. next prove a constraint on classes coefficients (not necessarily closed) manifolds. Finally, we obtain topological obstruction to the existence structures co-oriented contact
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ژورنال
عنوان ژورنال: Annali della Scuola normale superiore di Pisa. Classe di scienze
سال: 2021
ISSN: ['0391-173X', '2036-2145']
DOI: https://doi.org/10.2422/2036-2145.202010_006