Results 1 to 10 of about 61,340 (312)

On the absence of global solutions to two-times-fractional differential inequalities involving Hadamard-Caputo and Caputo fractional derivatives

open access: yesAIMS Mathematics, 2022
In this paper, we consider a two-times nonlinear fractional differential inequality involving both Hadamard-Caputo and Caputo fractional derivatives of different orders, with a singular potential term.
Ibtehal Alazman   +2 more
doaj   +1 more source

On properties of positive solutions to nonlinear tri-harmonic and bi-harmonic equations with negative exponents

open access: yesBulletin of Mathematical Sciences, 2022
In this paper, we investigate various properties (e.g. nonexistence, asymptotic behavior, uniqueness and integral representation formula) of positive solutions to nonlinear tri-harmonic equations in [Formula: see text] ([Formula: see text]) and bi ...
Wei Dai, Jingze Fu
doaj   +1 more source

Nonexistence of Global Solutions to Higher-Order Time-Fractional Evolution Inequalities with Subcritical Degeneracy

open access: yesMathematics, 2021
In this paper, we study the nonexistence of global weak solutions to higher-order time-fractional evolution inequalities with subcritical degeneracy. Using the test function method and some integral estimates, we establish sufficient conditions depending
Ravi P. Agarwal   +3 more
doaj   +1 more source

On a System of Riemann–Liouville Fractional Boundary Value Problems with ϱ-Laplacian Operators and Positive Parameters

open access: yesFractal and Fractional, 2022
In this paper, we study the existence and nonexistence of positive solutions of a system of Riemann–Liouville fractional differential equations with ϱ-Laplacian operators, supplemented with coupled nonlocal boundary conditions containing Riemann ...
Johnny Henderson   +2 more
doaj   +1 more source

Fujita-type theorems for a quasilinear parabolic differential inequality with weighted nonlocal source term

open access: yesAdvances in Nonlinear Analysis, 2023
This work is concerned with the nonexistence of nontrivial nonnegative weak solutions for a quasilinear parabolic differential inequality with weighted nonlocal source term in the whole space, which involves weighted polytropic filtration operator or ...
Li Yuepeng, Fang Zhong Bo
doaj   +1 more source

The Logos killed and the Apology of Nonexistense in the Philosophical Doctrine of Russian Literary Modernism

open access: yesИнтеллект. Инновации. Инвестиции, 2020
The article examines ontological issues in Russian literary modernism philosophy. The relevance of the topic is due to the affinity of the processes that determine the dominants of the worldview in the field of education and modernity.
S.L. Slobodnyuk
doaj   +1 more source

Hyperbolic inequalities with a Hardy potential singular on the boundary of an annulus

open access: yesAIMS Mathematics, 2023
We are concerned with the study of existence and nonexistence of weak solutions for a class of hyperbolic inequalities with a Hardy potential singular on the boundary $ \partial B_1 $ of the annulus $ A = \left\{x\in \mathbb{R}^3: 1 < |x|\leq 2\right\}
Ibtehal Alazman   +3 more
doaj   +1 more source

Generalized Picone inequalities and their applications to (p,q)-Laplace equations

open access: yesOpen Mathematics, 2020
We obtain a generalization of the Picone inequality which, in combination with the classical Picone inequality, appears to be useful for problems with the (p,q)(p,q)-Laplace-type operators.
Bobkov Vladimir, Tanaka Mieko
doaj   +1 more source

A Time-Fractional Parabolic Inequality on a Bounded Interval

open access: yesMathematics, 2023
We study a time-fractional parabolic inequality posed on a bounded interval and involving a wight function W, where the fractional derivative is considered in the Caputo sense.
Amal Alshabanat   +3 more
doaj   +1 more source

Positive Solutions for a System of Fractional Boundary Value Problems with r-Laplacian Operators, Uncoupled Nonlocal Conditions and Positive Parameters

open access: yesAxioms, 2022
In this paper, we investigate the existence and nonexistence of positive solutions for a system of Riemann–Liouville fractional differential equations with r-Laplacian operators, subject to nonlocal uncoupled boundary conditions that contain Riemann ...
Alexandru Tudorache, Rodica Luca
doaj   +1 more source

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