Results 1 to 10 of about 1,795 (267)

Extremal Solutions of Generalized Caputo-Type Fractional-Order Boundary Value Problems Using Monotone Iterative Method

Fractal and Fractional, 2022
The aim of this research work is to derive some appropriate results for extremal solutions to a class of generalized Caputo-type nonlinear fractional differential equations (FDEs) under nonlinear boundary conditions (NBCs).
Choukri Derbazi, Zidane Baitiche, Mohammed S. Abdo, Kamal Shah, Bahaaeldin Abdalla, Thabet Abdeljawad   +5 more
doaj   +3 more sources

Monotonically Iterative Method for the Cantilever Beam Equations

Axioms, 2023
In this paper, we consider the existence of extremal solutions for the nonlinear fourth-order differential equation. By use of a new comparison result, some sufficient conditions for the existence of extremal solutions are established by combining the ...
Yujun Cui, Huiling Chen, Yumei Zou
doaj   +1 more source

Observations on holographic aspects of four-dimensional asymptotically flat N $$ \mathcal{N} $$ = 2 black holes

Journal of High Energy Physics, 2022
In this note, we explore holographic attributes of four-dimensional near-extremal Reissner-Nordstrom black hole solutions in ungauged N $$ \mathcal{N} $$ = 2 supergravity theories at the two-derivative level by recasting them as a specific first-order ...
Pedro Aniceto, Gabriel Lopes Cardoso, Suresh Nampuri   +2 more
doaj   +1 more source

Extremal black hole horizons

Journal of High Energy Physics, 2018
Using the blackfold effective theory applied to extremal Kerr branes we provide evidence for the existence of new stationary extremal black hole solutions in asymptotically flat spacetime with both single and multiple disconnected horizons. These include
Jay Armas, Troels Harmark, Niels A. Obers   +2 more
doaj   +1 more source

On the Growth of Solutions of Second Order Linear Complex Differential Equations whose Coefficients Satisfy Certain Conditions

مجلة بغداد للعلوم, 2020
In this paper, we study the growth of solutions of the second order linear complex differential equations  insuring that any nontrivial solutions are of infinite order.
ayad alkhalidy, Eman Hussein
doaj   +1 more source

Carroll black holes

SciPost Physics, 2023
Despite the absence of a lightcone structure, some solutions of Carroll gravity show black hole-like behaviour. We define Carroll black holes as solutions of Carroll gravity that exhibit Carroll thermal properties and have a Carroll extremal surface ...
Florian Ecker, Daniel Grumiller, Jelle Hartong, Alfredo Pérez, Stefan Prohazka, Ricardo Troncoso
doaj   +1 more source

Causal difference equations with upper and lower solutions in the reverse order

Advances in Difference Equations, 2019
This paper is devoted to studying the existence conditions for difference equations involving causal operators in the presence of upper and lower solutions in the reverse order. To this end, we prove some new comparison theorems and develop the upper and
Wen-Li Wang, Jing-Feng Tian
doaj   +1 more source

Iterative technique for third-order differential equation with three-point nonlinear boundary value conditions

Electronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we study the existence of extremal solutions for a nonlinear third-order differential equation with three-point nonlinear boundary value conditions.
Xiuli Lin, Zengqin Zhao
doaj   +1 more source

Two kissing bolts

Journal of High Energy Physics, 2018
The study of non-supersymmetric black hole microstates offers the potential to resolve the black hole information paradox. A system of equations was recently obtained that enables the systematic construction of non-supersymmetric smooth horizonless ...
Guillaume Bossard, Stefanos Katmadas, David Turton   +2 more
doaj   +1 more source

Non-BPS black branes in M-theory over Calabi-Yau threefolds. (Non-)uniqueness and recombination of non-BPS black strings in single modulus CICY and THCY models

Journal of High Energy Physics, 2022
We study extremal solutions arising in M-theory compactifications on Calabi-Yau threefolds, focussing on non-BPS attractors for their importance in relation to the Weak Gravity Conjecture (WGC); M2 branes wrapped on two-cycles give rise to black holes ...
Alessio Marrani, Anshul Mishra, Prasanta K. Tripathy   +2 more
doaj   +1 more source