On the existence of positive solutions for the bending elastic beam equations
Keywords: راه حل مثبت; Statically elastic beam equation; Positive solution; Cone; Fixed point index
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Triple positive solutions for some second-order boundary value problem on a measure chain
Keywords: راه حل مثبت; Boundary value problem; Positive solution; Multiplicity; Measure chains; Fixed point theorem
Double positive solutions of boundary value problems for pp-Laplacian impulsive functional dynamic equations on time scales
Keywords: راه حل مثبت; Time scale; Boundary value problem; Positive solution; pp-Laplacian; Impulsive functional dynamic equation; Fixed point theorem; Cone
Positive solutions of a nonlinear second-order n-point boundary value problem
Keywords: راه حل مثبت; n-Point boundary value problem; Positive solution; Cone; Fixed-point theorem;
New results on the existence of bounded positive entire solutions for quasilinear elliptic systems
Keywords: راه حل مثبت; Bounded; Positive solution; Sub-solution; Super-solution;
Positive solutions of nonlinear second-order periodic boundary value problems
Keywords: راه حل مثبت; Nonlinear ordinary differential equation; Periodic boundary value problem; Positive solution; Existence; Multiplicity
Multiply sign-changing solutions for fourth-order nonlinear boundary value problems
Keywords: راه حل مثبت; 34B15; 47H10Fourth-order boundary value problem; Sign-changing solution; Positive solution; Cone; Fixed point index
A generalization of the cone expansion and compression fixed point theorem and applications
Keywords: راه حل مثبت; 47H10; 34B10; 34B15Fixed point theorem; Cone compression and expansion; Retract; Positive solution
Positive solutions for a class of boundary value problems on time scales
Keywords: راه حل مثبت; Time scales; Delta and nabla derivatives; Positive solution; Fixed point theorem; Existence
Positive solutions for the nonhomogeneous three-point boundary value problem of second-order differential equations
Keywords: راه حل مثبت; Positive solution; Nonhomogeneous boundary value; Differential equations; Cone; Fixed point
Positive solutions for a class of mm-point singular boundary value problems
Keywords: راه حل مثبت; Multi-point boundary value problem; Positive solution; Fixed point theorem; Existence; Singularity
Positive solutions to BVPs for a singular differential equation
Keywords: راه حل مثبت; 34B15; Singular differential equation; Positive solution; Existence; Uniqueness; Asymptotic behavior;
Successive iteration of positive solution for a discontinuous third-order boundary value problem
Keywords: راه حل مثبت; Nonlinear ordinary differential equation; Boundary value problem; Positive solution; Existence; Successive iteration method
Existence for unbounded positive solutions of Schrödinger equations in two-dimensional exterior domains
Keywords: راه حل مثبت; Positive solution; Schrödinger equations; Fixed point theorem
Existence and uniqueness of positive solutions for a higher order boundary value problem
Keywords: راه حل مثبت; Higher order boundary value problem; Positive solution; Spectral radius; Fixed point; Uniqueness
Positive solutions of fourth-order four-point boundary value problems with p-Laplacian operator
Keywords: راه حل مثبت; p-Laplacian operator; Singular boundary value problems; Fixed-point theorem; Positive solution
On the existence and uniqueness of solutions of a class of fractional differential equations
Keywords: راه حل مثبت; Erdélyi–Kober operators; Multi-order fractional differential equations; Existence; Uniqueness; Positive solution; Fixed-point theorem
Nontrivial solutions of singular sublinear Sturm–Liouville problems
Keywords: راه حل مثبت; Second-order singular equation; Two-point boundary value problem; Nontrivial solution; Positive solution
Delay differential logistic equation with linear harvesting
Keywords: راه حل مثبت; Delay logistic equation; Linear harvesting; Positive solution; Solution bound
A necessary and sufficient condition for the existence of positive solutions to singular sublinear three-point boundary value problems
Keywords: راه حل مثبت; Second-order singular three-point boundary value problems; Positive solution; Lower and upper solution; Maximum principle;
Positive solutions for a three-point boundary value problem
Keywords: راه حل مثبت; 34B16; 34B18Second-order singular equation; Three-point boundary value problem; Positive solution; Green’s function
New fixed point theorems and applications to boundary value problems with pp-Laplacian
Keywords: راه حل مثبت; Boundary value problem; Fixed point theorem; Positive solution
Existence and multiplicity of positive solutions to nonlinear first-order PBVPs on time scales
Keywords: راه حل مثبت; Time scale; PBVP; Positive solution; Fixed point; Existence and multiplicity
Positive solutions for singular second order three-point boundary value problems
Keywords: راه حل مثبت; 45J05; 34k30Three point; Singular; Positive solution; Theory of fixed point index
On existence theorems of positive solutions to nonlinear singular differential equations
Keywords: راه حل مثبت; Second order singular three-point boundary value problems; Positive solution; Lower and upper solution; Maximum principle;
Multiple positive solutions for the one-dimensional pp-Laplacian dynamic equations on time scales
Keywords: راه حل مثبت; Time scale; pp-Laplacian; Boundary value problem; Positive solution; Five functionals fixed-point theorem
Positive and dead core solutions of singular Dirichlet boundary value problems with ϕϕ-Laplacian
Keywords: راه حل مثبت; Singular Dirichlet boundary value problem; Positive solution; Dead core solution; Pseudodead core solution; Existence
Positive solutions of a singular nonlinear third order two-point boundary value problem
Keywords: راه حل مثبت; Singular nonlinear third order two-point boundary value problem; Positive solution; Green's function; Krasnosel'skii fixed-point theorem
Positive solutions and multiplicity of fourth-order m-point boundary value problems with two parameters
Keywords: راه حل مثبت; 34B18; Fourth-order m-point boundary value problem; Positive solution; Fixed point index;
Positive solutions for a three-point boundary value problem at resonance
Keywords: راه حل مثبت; Three-point boundary value problem; Fixed point theorem; Positive solution; Resonance;
On the evolution and qualitative behaviors of bifurcation curves for a boundary value problem
Keywords: راه حل مثبت; 34B15; 74G35; Bifurcation curve; Exact multiplicity; Positive solution; Turning point; Time map;
Existence of positive solution to a singular second-order initial value problem with impulses
Keywords: راه حل مثبت; 34B37Initial value problem; Positive solution; Singular; Impulse
The existence of positive solutions for a nonlinear four-point singular boundary value problem with a pp-Laplacian operator
Keywords: راه حل مثبت; 34B16pp-Laplacian operator; Four-point singular boundary value problem; Fixed-point index theory; Positive solution
The existence of countably many positive solutions for a system of nonlinear singular boundary value problems with the p-Laplacian operator
Keywords: راه حل مثبت; p-Laplacian operator; Singular boundary value problems; Fixed-point theorem; Positive solution;
Positive solutions of m-point boundary value problems for higher order ordinary differential equations
Keywords: راه حل مثبت; 34B10; 34B15; Higher order ordinary differential equation; m-point boundary value problem; Fixed point theorem in cones; Green's function; Positive solution;
Positive solutions of generalized Sturm–Liouville four-point boundary value problems in Banach spaces
Keywords: راه حل مثبت; Banach space; Positive solution; Fixed point; Sturm–Liouville; Four-point boundary value problems
Eigenvalue problem for p-Laplacian three-point boundary value problems on time scales
Keywords: راه حل مثبت; Positive solution; Cone; Fixed point
A complete classification of bifurcation diagrams of a p-Laplacian Dirichlet problem
Keywords: راه حل مثبت; Bifurcation diagram; Positive solution; Exact multiplicity; p-Laplacian; Time map
Existence of positive solutions for fourth-order m-point boundary value problem with variable parameters
Keywords: راه حل مثبت; Fourth-order m-point BVP; Positive solution; Fixed point index; Variable parameter
On the number of positive solutions of a nonlinear algebraic system
Keywords: راه حل مثبت; 39A10Nonlinear algebraic system; Positive solution; Existence; Multiplicity; Nonexistence; Cone; Fixed point theorem
Positive solutions and eigenvalue regions of two-delay singular systems with a twin parameter
Keywords: راه حل مثبت; 34B15; 34K10; Singular system; Positive solution; Delay; Fixed-point index; Cone;
On a singular boundary value problem arising in the theory of shallow membrane caps
Keywords: راه حل مثبت; Singular mixed boundary value problem; Positive solution; Shallow membrane; Collocation method; Lower and upper functions;
A class of 2nth-order singular boundary value problems
Keywords: راه حل مثبت; 34B16; Singular boundary value problem; Positive solution; Lower and upper solution; Maximum principle; A partial ordering; 2nth order;
Classical and non-classical solutions of a prescribed curvature equation
Keywords: راه حل مثبت; 34B18; 34B15; 47J30; 53A10Prescribed curvature equation; Two-point boundary value problem; Positive solution; Existence; Multiplicity; Regularization; Variational method
Existence theory for positive solutions to one-dimensional p-Laplacian boundary value problems on time scales
Keywords: راه حل مثبت; 34B15; 39A10Time scales; Positive solution; Cone; Fixed point
Existence of positive solutions of pp-Laplacian difference equations
Keywords: راه حل مثبت; pp-Laplacian; Boundary value problem; Positive solution
Positive solution for first-order discrete periodic boundary value problem
Keywords: راه حل مثبت; Discrete periodic boundary value problem; Positive solution; Fixed point; Cone
The periodic character of positive solutions of the difference equation χn+1 = (χn, χn−k)
Keywords: راه حل مثبت; Difference equation; Positive solution; Equilibrium; Periodic solution; Global attractivity
Singular mixed boundary value problem
Keywords: راه حل مثبت; Singular mixed boundary value problem; Positive solution; Lower and upper functions; Convergence of approximate regular problems
On the existence of positive solutions for 2n2n-order singular boundary value problems
Keywords: راه حل مثبت; 34B15; 34B16; 34B18Higher order differential equation; Singular boundary value problem; Positive solution; Upper and lower solution; Decreasing function