Directory UMM :Journals:Journal_of_mathematics:EJQTDE:
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[6] contains some theorems on the existence and uniqueness of solutions of singular Cauchy–Nicoletti problems for systems of ordinary differential equations.. We note that
Waltman, Singular nonlinear bound- ary value problems for second order ordinary differential equations.. Henderson, Singular nonlinear boundary value problems for higher order
Ashordia, The conditions of existence and of uniqueness of solutions of nonlinear boundary value problems for systems of general- ized ordinary differential equations.. Ashordia, On
The paper deals with the existence of solutions for singular higher order differential equations with Sturm–Liouville or ( p, n − p ) right focal boundary conditions or the ( n − p, p
However, in the literature, the existence of three positive solutions has never been established for boundary value problems of delay differential equations with
Nieto, Existence of solutions for nonlocal boundary value problems of higher order nonlinear fractional differential equations, Abstract and Applied Analysis, 2009 (2009), Article
That is, some authors have used fixed point theorems to show the existence of pos- itive solutions to boundary value problems for ordinary differential equations, difference
Nieto, Existence of solutions for anti-periodic boundary value problems involving fractional differential equations via Leray-Schauder degree theory, Topological Methods in
