Multiple periodic solutions for first-order ordinary differential equations
It is studied the multiplicity of periodic solutions for first-order ordinary differential equations of the type \(\dot x+g(t)x=f(t,x),\) where \(g(t+p)=g(t)\), \(f(t+p,x)=f(t,x),\) \(g\in L\) \(1_{loc}\) and f satisfies suitable continuity assumptions.
first-order ordinary differential equations
scientific article; zbMATH DE number 4063569