Two lectures on the center-focus problem for the equation $\frac{dy}{dx}+{\sum }_{i=1}^n{a}_i(x)y^i=0,0\le x\le 1$ where $a_i$ are polynomials

Abstract

This is an extended version of two lectures given during the Zagreb Dynamical Systems Workshop, October 22-26, 2018.

References in corpus (1)

• Quadratic perturbations of quadratic codimension-four centers