Results 31 to 40 of about 1,767 (264)
Electromagnetic quasitopological gravities
Journal of High Energy Physics, 2020 We identify a set of higher-derivative extensions of Einstein-Maxwell theory that allow for spherically symmetric charged solutions characterized by a single metric function f (r) = −g tt = 1/g rr .
Pablo A. Cano, Ángel Murcia
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Information Inequalities via Submodularity and a Problem in Extremal Graph Theory
Entropy, 2022 The present paper offers, in its first part, a unified approach for the derivation of families of inequalities for set functions which satisfy sub/supermodularity properties.
Igal Sason
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Approximation of the classes $W^{r}_{\beta,\infty}$ by three-harmonic Poisson integrals
Karpatsʹkì Matematičnì Publìkacìï, 2019 In the paper, we solve one extremal problem of the theory of approximation of functional classes by linear methods. Namely, questions are investigated concerning the approximation of classes of differentiable functions by $\lambda$-methods of summation ...
U.Z. Hrabova, I.V. Kal'chuk
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Unconstrained Lagrangian Variational Principles for the Einstein Field Equations
Entropy, 2023 This paper deals with the problem of establishing a systematic theoretical formulation of variational principles for the continuum gravitational field dynamics of classical General Relativity (GR).
Claudio Cremaschini, Massimo Tessarotto
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Radially Excited AdS5 Black Holes in Einstein–Maxwell–Chern–Simons Theory
Entropy, 2017 In the large coupling regime of the 5-dimensional Einstein–Maxwell–Chern–Simons theory, charged and rotating cohomogeneity-1 black holes form sequences of extremal and non-extremal radially excited configurations.
Jose Luis Blázquez-Salcedo
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Hypernormal distribution theory: Analysis of the set of extreme random variables models
European Scientific e-Journal, 2023 The analysis of the set of extreme random variables models is still an extremely topical topic in many areas of mathematical research in the theory and practice of managing production processes due to its specificity and great interest in finding an expectation and stability indicators set studied in practical economics.
Buychik, Alexander, Komissarov, Peter V.
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Journal of High Energy Physics, 2023 We present a JT gravity set up in the presence of projected ModMax corrections in two dimensions. Our starting point is the Einstein’s gravity in four dimensions accompanied by the ModMax Lagrangian. The 2D gravity action is obtained following a suitable
Hemant Rathi, Dibakar Roychowdhury
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Single particle operators and their correlators in free N $$ \mathcal{N} $$ = 4 SYM
Journal of High Energy Physics, 2020 We consider a set of half-BPS operators in N $$ \mathcal{N} $$ = 4 super Yang-Mills theory which are appropriate for describing single-particle states of superstring theory on AdS5 × S 5.
F. Aprile +6 more
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Extreme convex set functions with finite carrier: General theory
Discrete Mathematics, 1974 AbstractLet Ω={1,…,n} and P={X:S⊆Ω}. A mapping e : P→R+ is a convex set function if e(⊖)=0 and e(S) + e(T)⩽e(S∩T) + e(S ∪ T) for all S. TϵP. The set of convex set functions for fixed Ω is a convex cone and the paper is dealing with the extreme points of the base 1 = {e: e(Ω)=1} of this cone.
J. Rosenmüller, H. G. Weidner
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Anthracycline‐related cardiac remodeling precedes heart failure in childhood cancer survivors. The objectives of this study were to determine the relationships between patient‐specific factors, moderate‐to‐vigorous physical activity (MVPA), and cardiac remodeling.
Hari K. Narayan +15 more
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