1 citations · 2 across the 3 of their papers we have counts for
3 papers
math.DS2011★ 1 cited
Various aspects of differential equations having a complete set of independent first integrals
R. Ramírez, N. Sadovskaia
In this paper we study the differential equations in having a complete set of independent first integrals. In particular we study the case when the first integ…
math.DS2010★ 1 cited
Cartesian approach for constrained mechanical systems
Rafael Ramírez, Natalia sadovskaia
In the history of mechanics, there have been two points of view for studying mechanical systems: Newtonian and Cartesian. According the Descartes point of view, the motion of mecha…
math.DS2009
Quadratic vector fields with invariant algebraic curve of large degree
R. Ramirez, N. Sadovskaia
We construct a polynomial planar vector field of degree two with one invariant algebraic curves of large degree. We exhibit an explicit quadratic vector fields which invariant curv…