Multiple solutions of nonlinear boundary value problems and topological degree
Construction of non-constant lower and upper functions for impulsive periodic problems.
Upper and lower solutions satisfying the inverse inequality
We consider multipoint and two-point BVPs for second order ordinary differential equations with a Carathéodory right hand side. We prove the existence of solutions provided there exist upper and lower solutions of the BVP and the upper solution is less than the lower one.
On a Kneser problem for a system of nonlinear ordinary differential equations
Об одной нелинейной задаче для дифференциальных систем -го порядка
On four-point boundary value problem without growth conditions
We prove the existence of solutions of four-point boundary value problems under the assumption that fulfils various combinations of sign conditions and no growth restrictions are imposed on . In contrast to earlier works all our results are proved for the Carathéodory case.
A four-point problem for differential equations of the second order
On a coincidence of central dispersions of the first and second kind in connection with periodic solutions of the differential equation
On Kneser problem for differential equations of the 3rd order
On algebraic properties of dispersions of the 3rd and 4th kind of the differential equation
On the theory of phases of academican O. Borůvka
Boundary value problems with nonlinear conditions
A transmission problem
Algebraic properties of phases of the differential equation
Periodic boundary value problems for second order differential equations
Sign conditions in nonlinear boundary value problems
On a nonlinear problem for third-order differential equations
On certain multipoint boundary valued problems
An existence theorem of the Leray-Schauder type for four-point boundary value problems
Nonnegative nonincreasing solutions of differential equations of the 3rd order
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