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Extremal black hole horizons [PDF]

open access: yesJournal 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   +2 more
doaj   +5 more sources

Monotonically Iterative Method for the Cantilever Beam Equations

open access: yesAxioms, 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

Extremal rotating solutions in Hořava gravity [PDF]

open access: yesPhysical Review D, 2010
14 pages, Latex file.
Ghodsi, Ahmad, Hatefi, Ehsan
openaire   +2 more sources

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Carroll black holes

open access: yesSciPost 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

Algorithmic Solution of Extremal Digraph Problems [PDF]

open access: yesTransactions of the American Mathematical Society, 1985
For a given family L \mathcal {L} of digraphs, we study the "extremal" digraphs on n n vertices containing no member of L \mathcal {L} , and having the maximum number of arcs, ex ⁡ ( n , L ...
Brown, William G.   +2 more
openaire   +1 more source

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

open access: yesمجلة 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

Heating up branes in gauged supergravity [PDF]

open access: yes, 2014
In this note, we explore the solution space of non-extremal black objects in $4D$ and $5D$ ${\cal N}=2$ gauged supergravity in the presence of fluxes. We present first order rewritings of the $4D$ action for a classes of non-extremal dyonic and electric ...
Goldstein, Kevin   +2 more
core   +2 more sources

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

open access: yesAdvances 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

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

open access: yesFractal 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   +5 more
doaj   +1 more source

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