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Impulsive resonance periodic problems of first order. (English) Zbl 1022.34025
A theorem on the existence of solutions to the nonlinear periodic boundary value problem $$u'(t)+ F(t, u(t))= 0,\quad t\ne t_1,\dots, t_p,\quad u(t^+_j)= u(t^-_j)+ I_j(u(t^-_j)),\quad j= 1,\dots, p,$$ is proved.

##### MSC:
 34B37 Boundary value problems for ODE with impulses 34C25 Periodic solutions of ODE 34B15 Nonlinear boundary value problems for ODE
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##### References:
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