Keywords: راه حل پایین و بالا; Fourth-order ordinary differential equation; Boundary value problem; Schauder fixed point theorem; Lower and upper solution; Singular perturbation
مقالات ISI راه حل پایین و بالا (ترجمه نشده)
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Monotone iterative method for the periodic boundary value problems of impulsive evolution equations in Banach spaces
Keywords: راه حل پایین و بالا; Boundary value problem; Lower and upper solution; Impulsive integro-differential evolution equation; C0-Semigroup; Cone; 34K30; 34K45; 35K10;
Existence of positive solutions for nnth-order pp-Laplacian singular sublinear boundary value problems
Keywords: راه حل پایین و بالا; Singular boundary value problem; Positive solution; Lower and upper solution; nnth-order pp-Laplacian
A monotone iterative technique for solving the bending elastic beam equations
Keywords: راه حل پایین و بالا; Statically elastic beam equation; Maximum principle; Lower and upper solution; Monotone iterative technique
A necessary and sufficient condition for the existence of positive solutions to a kind of singular three-point boundary value problem
Keywords: راه حل پایین و بالا; 34B10; 34B18Singular; Three-point boundary value problem; Positive solutions; Lower and upper solution; Maximum principle
Existence of solutions for anti-periodic boundary value problems
Keywords: راه حل پایین و بالا; Anti-periodic boundary value problem; Fixed point; Lower and upper solution
The method of upper and lower solutions and impulsive fractional differential inclusions
Keywords: راه حل پایین و بالا; Initial value problem; Fractional differential inclusions; Impulses; Caputo fractional derivative; Fractional integral; Lower and upper solution; Fixed point
Uniqueness and existence results for initial value problems on time scales through a reciprocal problem and applications
Keywords: راه حل پایین و بالا; Time scales; First-order dynamic equation; Weak solution; Lower and upper solution; Carathéodory’s conditions
Positive solutions of singular Emden–Fowler boundary value problem with negative exponent and multiple impulses
Keywords: راه حل پایین و بالا; Singular impulsive boundary value problem; Lower and upper solution; Positive solution; Necessary and sufficient condition
Existence and uniqueness of positive solutions to a class of singular m-point boundary value problems
Keywords: راه حل پایین و بالا; Second order singular m-point boundary value problems; Positive solution; Lower and upper solution; Maximum principle
Positive solutions of 2nth-order ordinary differential equations with multi-point boundary conditions
Keywords: راه حل پایین و بالا; Multi-point boundary value problem; Fixed point theorem; Positive solution; Lower and upper solution
The existence and approximation of extremal solutions to several first-order discontinuous dynamic equations with nonlinear boundary value conditions
Keywords: راه حل پایین و بالا; 39A10Time scales; First-order dynamic equation; Weak solution; Lower and upper solution; Nonlinear boundary value conditions
Positive solutions for a class of 2n2nth-order singular boundary value problems
Keywords: راه حل پایین و بالا; 34B15Boundary value problem; Positive solution; Fixed point theory; Lower and upper solution; Maximum principle
On some third order nonlinear boundary value problems: Existence, location and multiplicity results
Keywords: راه حل پایین و بالا; Nagumo-type conditions; Lower and upper solution; Topological degree; Ambrosetti–Prodi problems
Periodic boundary value problem for first-order impulsive functional differential equations
Keywords: راه حل پایین و بالا; Periodic boundary value problem; Impulsive functional differential equations; Comparison principle; Lower and upper solution; Monotone iterative technique
A necessary and sufficient condition for the existence of positive solutions to singular sublinear three-point boundary value problems
Keywords: راه حل پایین و بالا; Second-order singular three-point boundary value problems; Positive solution; Lower and upper solution; Maximum principle;
Monotone iterative technique for addressing impulsive integro-differential equations in Banach spaces
Keywords: راه حل پایین و بالا; 34A37; 34G20; 45J05Impulsive integro-differential equation; Initial value problem; Cone; Lower and upper solution; Measure of noncompactness
On existence theorems of positive solutions to nonlinear singular differential equations
Keywords: راه حل پایین و بالا; Second order singular three-point boundary value problems; Positive solution; Lower and upper solution; Maximum principle;
A class of 2nth-order singular boundary value problems
Keywords: راه حل پایین و بالا; 34B16; Singular boundary value problem; Positive solution; Lower and upper solution; Maximum principle; A partial ordering; 2nth order;
Positive solutions for 2nth-order singular sub-linear m-point boundary value problems
Keywords: راه حل پایین و بالا; Singular m-point boundary value problem; Positive solution; Lower and upper solution; A partial ordering; A comparison theorem;
Antiperiodic boundary value problem for first-order impulsive ordinary differential equations
Keywords: راه حل پایین و بالا; Antiperiodic boundary value problem; Impulse; Leray-Schauder alternative; Lower and upper solution; Monotone iterative technique;
Positive solutions of some singular m-point boundary value problems at non-resonance
Keywords: راه حل پایین و بالا; Singular m-point boundary value problem; Positive solution; Lower and upper solution; Maximum principle; Non-resonance;
Existence of positive solutions for 2nth-order singular sublinear boundary value problems
Keywords: راه حل پایین و بالا; Singular boundary value problem; Positive solution; Lower and upper solution; Maximum principle; 2nth-order;