21,266 research outputs found
Monotonic solutions of functional integral and differential equations of fractional order
The existence of positive monotonic solutions, in the class of continuous functions, for some nonlinear quadratic integral equations have been studied by J. Banas. Here we are concerned with a singular quadratic functional integral equations. The existence of positive monotonic solutions will be proved. The fractional order nonlinear functional differential equation will be given as a special case
Monotonic solutions of functional integral and differential equations of fractional order
The existence of positive monotonic solutions, in the class of continuous functions, for some nonlinear quadratic integral equations have been studied by J. Banas. Here we are concerned with a singular quadratic functional integral equations. The existence of positive monotonic solutions will be proved. The fractional order nonlinear functional differential equation will be given as a special case
Positive Solutions to Nonlinear Higher-Order Nonlocal Boundary Value Problems for Fractional Differential Equations
We study existence of positive solutions to nonlinear higher-order nonlocal
boundary value problems corresponding to fractional differential equation of the type 0+()+(,())=0, ∈(0,1), 0<<1. (1)=()+2, (0)=()−1, (0)=0, (0)=0⋯(−1)(0)=0, where, −1<<, (≥3)∈ℕ, 0<,,<1, the boundary parameters 1,2∈ℝ+ and 0+ is the Caputo fractional derivative. We use the classical tools from functional analysis to obtain
sufficient conditions for the existence and uniqueness of positive solutions to the boundary value
problems. We also obtain conditions for the nonexistence of positive solutions to the problem. We
include examples to show the applicability of our results
Existence of positive solutions for boundary value problems of fractional functional differential equations
This paper deals with the existence of positive solutions for a boundary value problem involving a nonlinear functional differential equation of fractional order given by , , , , , . Our results are based on the nonlinear alternative of Leray-Schauder type and Krasnosel'skii fixed point theorem
Multiplicity of solutions for fractional Schr\"odinger systems in
In this paper we deal with the following nonlocal systems of fractional
Schr\"odinger equations \begin{equation*} \left\{ \begin{array}{ll}
\varepsilon^{2s} (-\Delta)^{s}u+V(x)u=Q_{u}(u, v)+\gamma H_{u}(u, v) &\mbox{ in
} \mathbb{R}^{N}\\ \varepsilon^{2s} (-\Delta)^{s}v+W(x)v=Q_{v}(u, v)+\gamma
H_{v}(u, v) &\mbox{ in } \mathbb{R}^{N} \\ u, v>0 &\mbox{ in } \mathbb{R}^{N},
\end{array} \right. \end{equation*} where , ,
, is the fractional Laplacian,
and are continuous potentials, is a homogeneous -function
with subcritical growth, and with
such that . We investigate the subcritical case
and the critical case , and using
Ljusternik-Schnirelmann theory, we relate the number of solutions with the
topology of the set where the potentials and attain their minimum
values
Uniform asymptotic stability of solutions of fractional functional differential equations
In this paper, some global existence and uniform asymptotic stability results
for fractional functional differential equations are proved. It is worthy
mentioning that when the initial value problem (1.1) reduces to a
classical dissipative differential equation with delays in [4]Comment: 18 pages, 2 figure
Mountain pass solutions for the fractional Berestycki-Lions problem
We investigate the existence of least energy solutions and infinitely many
solutions for the following nonlinear fractional equation (-\Delta)^{s} u =
g(u) \mbox{ in } \mathbb{R}^{N}, where , ,
is the fractional Laplacian and is an
odd function satisfying Berestycki-Lions type
assumptions. The proof is based on the symmetric mountain pass approach
developed by Hirata, Ikoma and Tanaka in \cite{HIT}. Moreover, by combining the
mountain pass approach and an approximation argument, we also prove the
existence of a positive radially symmetric solution for the above problem when
satisfies suitable growth conditions which make our problem fall in the so
called "zero mass" case
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