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math.DG2026
Godbillon-Vey classes of Lie subalgebroids
Shuhei Yonehara
The Godbillon-Vey class is a secondary characteristic class which is defined for regular foliations and have been studied extensively. On the other hand, extending the Godbillon-Ve…
math.DG2024
Godbillon-Vey classes of regular Jacobi manifolds
Shuhei Yonehara
The notion of a Jacobi manifold is a natural generalization of that of a Poisson manifold. A Jacobi manifold has a natural foliation in which each leaf has either a contact structu…