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math.AT2016
Symplectic Asphericity, Category Weight, and Closed Characteristics of K-Contact Manifolds
Yuli Rudyak, Aleksy Tralle
Let be a closed K-contact -manifold equipped with a quasi-regular K-contact structure. Rukimbira proved that the Reeb vector field of this structure has at least $n…
math.AT2016
Maps of Degree 1 and Lusternik--Schnirelmann Category
Yuli Rudyak
Given a map of degree 1 of closed manifolds. Is it true that the Lusternik--Schnirelmann category of the range of the map is not more that the category of the domain?…