The number of limit cycles that can be born from periodic solutions of a polynomial Hamiltonian planar system by a small polynomial perturbation not increasing the degree , is explicitly bounded by a … more →
Sergei Yakovenko's WeblogJSE wrote 1 year ago: I came back this morning from a very brief trip to California to speak at Southern California Number … more →
Sergei Yakovenko wrote 1 year ago: The number of limit cycles that can be born from periodic solutions of a polynomial Hamiltonian plan … more →
Sergei Yakovenko wrote 1 year ago: Meromorphic flat connexions on holomorphic manifolds: Integrability, monodromy, classification Pfaff … more →
Sergei Yakovenko wrote 1 year ago: Linear ordinary differential equations of order n Construction of the Weyl algebra (noncommutative … more →
Sergei Yakovenko wrote 1 year ago: Bolibruch Impossibility Theorem Revealing an obstruction for realization of a matrix group as the mo … more →
Sergei Yakovenko wrote 1 year ago: Systems of Linear ODEs with complex time Total recall: on differential equations in the complex doma … more →
Sergei Yakovenko wrote 1 year ago: Topological properties of Abelian integrals The second “learning in groups” meeting will … more →