Results 31 to 40 of about 12,972,182 (333)

Extremal distributions of discrepancy functions [PDF]

open access: yesJournal of Complexity, 2019
11 ...
Ralph Kritzinger, Markus Passenbrunner
openaire   +3 more sources

Uniqueness of near-horizon geometries of rotating extremal AdS(4) black holes [PDF]

open access: yes, 2009
We consider stationary extremal black hole solutions of the Einstein-Maxwell equations with a negative cosmological constant in four dimensions. We determine all non-static axisymmetric near-horizon geometries and all static near-horizon geometries for ...
Lucietti, James, Kunduri, Hari K.
core   +1 more source

Reversed Hardy-Littlewood-Sobolev inequalities with weights on the Heisenberg group

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we establish some reverse weighted Hardy-Littlewood-Sobolev inequalities on the Heisenberg group. We then show the existence of extremal functions for the above inequalities by combining the subcritical approach and the renormalization ...
Hu Yunyun
doaj   +1 more source

Extremal Graphs to Vertex Degree Function Index for Convex Functions [PDF]

open access: yes, 2022
The vertex-degree function index Hf(Γ) is defined as Hf(Γ)=∑v∈V(Γ)f(d(v)) for a function f(x) defined on non-negative real numbers.
Zhen Ji   +3 more
core   +1 more source

Extremal orders of some functions connected to regular integers modulo n

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
Let V (n) denote the number of positive regular integers (mod n) less than or equal to n. We give extremal orders of , , , , where σ(n), ψ(n) are the sum-of-divisors function and the Dedekind function, respectively. We also give extremal orders for and ,
Brăduţ Apostol
doaj   +1 more source

Thermodynamics and weak cosmic censorship conjecture in Reissner-Nordström anti-de Sitter black holes with scalar field

open access: yesNuclear Physics B, 2019
The thermodynamics and weak cosmic censorship conjecture in Reissner-Nordström anti-de Sitter black holes are investigated by the scattering of the scalar field.
Deyou Chen, Wei Yang, Xiaoxiong Zeng
doaj   +1 more source

Functionals of clusters of extremes [PDF]

open access: yesAdvances in Applied Probability, 2003
For arbitrary stationary sequences of random variables satisfying a mild mixing condition, distributional approximations are established for functionals of clusters of exceedances over a high threshold. The approximations are in terms of the distribution of the process conditionally on the event that the first variable exceeds the threshold.
openaire   +6 more sources

Approximation by Extreme Functions

open access: yesJournal of Approximation Theory, 1999
For a topological space \(T\) and a real normed space \(X\) let \(Y= C(T,X)\), the normed space of all \(X\)-valued bounded continuous functions on \(T\) endowed with the supremum norm. Let \(Y^{-1}=\{f\in Y:f\) does not vanish in any \(t\in T\}\). For \(f\in Y\), let \(\alpha(f)= d(f,Y^{-1})\) and let \(m(f)= \inf \{\|f(t)\|: t\in T\}\).
Jiménez-Vargas, A   +2 more
openaire   +2 more sources

On some interconnections between combinatorial optimization and extremal graph theory [PDF]

open access: yesYugoslav Journal of Operations Research, 2004
The uniting feature of combinatorial optimization and extremal graph theory is that in both areas one should find extrema of a function defined in most cases on a finite set.
Cvetković Dragoš M.   +2 more
doaj   +1 more source

The extremal function for partial bipartite tilings [PDF]

open access: yesEuropean journal of combinatorics (Print), 2009
For a fixed bipartite graph H and given @a@?(0,1), we determine the threshold T"H(@a) which guarantees that any n-vertex graph with at least T"H(@a)n2 edges contains (1-o(1))@av(H)n vertex-disjoint copies of H.
Codrut Grosu, J. Hladký
semanticscholar   +1 more source

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