Results 1 to 10 of about 70,107 (293)

Fixed-time and state-dependent time discontinuities in the theory of Stieltjes differential equations

Electronic Journal of Qualitative Theory of Differential Equations, 2022
In the present paper, we are concerned with a very general problem, namely the Stieltjes differential Cauchy problem involving state-dependent discontinuities.
Bianca Satco
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Nonlocal Problems for Hilfer Fractional q-Difference Equations

Fractal and Fractional, 2023
In the paper, we investigate a kind of Hilfer fractional q-difference equations with nonlocal condition. Firstly, the existence and uniqueness results of solutions are obtained by using topological degree theory and Banach fixed point theorem ...
Chunping Tian, Haibo Gu, Zunkai Yang
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On the Existence and Applicability of Extremal Principles in the Theory of Irreversible Processes: A Critical Review

Energies, 2022
A brief review of the development of ideas on extremal principles in the theory of heat and mass transfer processes (including those in reacting media) is given. The extremal principles of non-equilibrium thermodynamics are critically examined.
Igor Donskoy
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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
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Flows of rotating extremal attractor black holes

Journal of High Energy Physics, 2023
We investigate the attractor mechanism of five-dimensional extremal rotating black holes in Einstein gravity minimally coupled with a multiplet complex scalar.
Norihiro Iizuka, Akihiro Ishibashi, Kengo Maeda   +2 more
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De-singularizing the extremal GMGHS black hole via higher derivatives corrections

Physics Letters B, 2021
The Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole is an influential solution of the low energy heterotic string theory. As it is well known, it presents a singular extremal limit.
Carlos Herdeiro, Eugen Radu, Kunihito Uzawa   +2 more
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Conformal bootstrap deformations

Journal of High Energy Physics, 2022
We explore the space of extremal functionals in the conformal bootstrap. By recasting the bootstrap problem as a set of non-linear equations parameterized by the CFT data, we find an efficient algorithm for converging to the extremal solution ...
Nima Afkhami-Jeddi
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Extremal rotating solutions in Hořava gravity [PDF]

Physical Review D, 2010
14 pages, Latex file.
Ghodsi, Ahmad, Hatefi, Ehsan
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Excited States of Maximal Warm Holes

Universe, 2023
Recently, the Einstein–Maxwell–scalar model with a non-minimal coupling between the scalar and Maxwell fields was explored. As a result, a new class of black hole solutions with scalar hair was discovered.
Yuan Yue, Yong-Qiang Wang
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Algorithmic Solution of Extremal Digraph Problems [PDF]

Transactions 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., Erdős, Paul, Simonovits, M.   +2 more
openaire   +1 more source