Abstract:
Let us consider the general homogeneous quadratic dynamic system. We will
call it algebraically integrable by given functions h1,…,hn if
the set of roots of the equation ξn−h1ξn−1+⋯+(−1)nhn≡0 solves the dynamic system.
The talk introduces this new notion of algebraic integrability and presents
a wide class of quadratic dynamic systems that are algebraically integrable
by the set of functions h1,…,hn where h1 is the solution
to an ordinary differential equation of order n and hk are
differential polynomials in h1, k=2,…,n. Results on
algebraically integrable quadratic dynamic systems and non-linear ordinary
differential equations related to them are obtained. Classical examples like
the Darboux–Halphen system are considered.