The boundary of stability in a simple class of monodromic germs

A two-parameter family of vector fields is constructed with a monodromic singular point and with a Newton diagram consisting of one edge. For this family, the conditions of "nondegeneracy" are satisfied, allowing it to be assigned to a class with a simple monodromic singular point. The asymptotics of the stability boundary in this family is constructed, which contains terms with a logarithm, which implies the analytical unsolvability of the stability problem in the closure of this class of vector fields with a simple monodromic singular point.