4 citations · 10 across the 13 of their papers we have counts for
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An -differentiable cohomology induced by a vector field
Mircea Crasmareanu, Cristian Ida, Paul Popescu
A new cohomology, induced by a vector field, is defined on pairs of differential forms (--differentiable forms) in a manifold. It is proved a link with the classical de Rham coh…
Nonlinear constraints in nonholonomic mechanics
Paul Popescu, Cristian Ida
In this paper we have obtained some dynamics equations, in the presence of nonlinear nonholonomic constraints and according to a lagrangian and some Chetaev-like conditions. Using…
Vertical Liouville foliations on the big-tangent manifold of a Finsler space
Cristian Ida, Paul Popescu
The present paper unifies some aspects concerning the vertical Liouville distributions on the tangent (cotangent) bundle of a Finsler (Cartan) space in the context of generalized g…
Generalized almost paracontact structures
Adara M. Blaga, Cristian Ida
The notion of generalized almost paracontact structure on the generalized tangent bundle is introduced and its properties are investigated. The case when the manifo…
Godbillon-Vey classes of a family of regular foliations
Cristian Ida, Paul Popescu
The aim of the paper is to construct some Godbillon-Vey classes of a family of regular foliations, defined in the paper. These classes are cohomology classes on the manifold or on…