Results 1 to 10 of about 103,871 (266)

Positive solutions of arbitrary order nonlinear fractional differential equations with advanced arguments [PDF]

Opuscula Mathematica, 2011
In this paper, we investigate the existence and uniqueness of positive solutions to arbitrary order nonlinear fractional differential equations with advanced arguments.
Sotiris K. Ntouyas, Guotao Wang, Lihong Zhang   +2 more
doaj   +3 more sources

Fixed point theorems for alpha-contractive mappings of Meir–Keeler type and applications

Nonlinear Analysis, 2014
In this paper, we introduce the notion of α-contractive mapping of Meir–Keeler type in complete metric spaces and prove new theorems which assure the existence, uniqueness and iterative approximation of the fixed point for this type of contraction.
Maher Berzig, Mircea-Dan Rus
doaj   +3 more sources

Existence and uniqueness theorems for pointwise-slant immersions in Sasakian space forms

AIMS Mathematics, 2023
In this paper we derive the Existence and Uniqueness Theorems for pointwise slant immersions in Sasakian space forms which extend the Existence and Uniqueness Theorems for slant immersions in Sasakian space forms proved by Cabreizo et al in 2001.
Noura Alhouiti
doaj   +1 more source

On the existence and uniqueness of solutions to boundary value problems on time scales

Advances in Difference Equations, 2004
This work formulates existence, uniqueness, and uniqueness-implies-existence theorems for solutions to two-point vector boundary value problems on time scales.
Christopher C. Tisdell, Allan Peterson, Johnny Henderson   +2 more
doaj   +2 more sources

A Correlation Between Solutions of Uncertain Fractional Forward Difference Equations and Their Paths

Frontiers in Physics, 2020
We consider the comparison theorems for the fractional forward h-difference equations in the context of discrete fractional calculus. Moreover, we consider the existence and uniqueness theorem for the uncertain fractional forward h-difference equations ...
Hari Mohan Srivastava, Pshtiwan Othman Mohammed   +1 more
doaj   +1 more source

Existence and uniqueness theorems for functional equations

Communications in Mathematics, 2023
In this paper we give simple extension and uniqueness theorems for restricted additive and logarithmic functional equations.
Glavosits, Tamás, Karácsony, Zsolt
openaire   +4 more sources

Some fixed point theorem uses intimate mappings to produce intuitionistic fuzzy metric space [PDF]

Journal of Hyperstructures
The aim of this research paper to use the concept of Intimate mappings to demonstrate the existence and uniqueness of common fixed point theorems for self-mappings in intuitionistic fuzzy metric space.
Ram Singh
doaj   +1 more source

Existence and Uniqueness of Solutions for Fractional Integro-Differential Equations Involving the Hadamard Derivatives

Mathematics, 2022
In this paper, we study the existence and uniqueness of solutions for the following fractional boundary value problem, consisting of the Hadamard fractional derivative: HDαx(t)=Af(t,x(t))+∑i=1kCiHIβigi(t,x(t)),t∈(1,e), supplemented with fractional ...
Nemat Nyamoradi, Sotiris K. Ntouyas, Jessada Tariboon   +2 more
doaj   +1 more source

Existence of l-th moment of solution of Ito-Skorokhod stochastic dynamic systems of random structure with external dis- turbances and all prehistory

Науковий вісник Ужгородського університету. Серія: Математика і інформатика, 2020
In this article the definition of strong solution of Ito-Skorokhod stochastic dynamic systems of random structure with external disturbances and all prehistory is presented, important inequalities, which are used to prove Existence and Uniqueness ...
В. К. Ясинський, С. В. Антонюк   +1 more
doaj   +1 more source

user's guide to viscosity solutions of second order partial differential equations [PDF]

, 1992
The notion of viscosity solutions of scalar fully nonlinear partial differential equations of second order provides a framework in which startling comparison and uniqueness theorems, existence theorems, and theorems about continuous dependence may now be
Crandall, Michael G., Ishii, Hitoshi, Lions, Pierre-Louis   +2 more
core   +4 more sources