Results 31 to 40 of about 5,422,793 (299)

Black hole attractors and the entropy function in four- and five-dimensional N=2 supergravity [PDF]

open access: yes, 2007
Extremal black holes in theories of gravity coupled to abelian gauge fields and neutral scalars, such as those arising in the low-energy description of compactifications of string theory on Calabi-Yau manifolds, exhibit the attractor phenomenon: on the ...
Perz, Jan
core   +1 more source

Extremality of submodular functions

open access: yesTheoretical Computer Science, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Uniform Convergence of Some Extremal Polynomials in Domain with Corners on the Boundary

open access: yesJournal of Inequalities and Applications, 2010
The aim of this paper is to investigate approximation properties of some extremal polynomials in Ap1, p>0 space. We are interested in finding approximation rate of extremal polynomials to Riemann function in Ap1 and C-norms on domains bounded by ...
M. Kucukaslan   +2 more
doaj   +2 more sources

On Witten’s Extremal Partition Functions [PDF]

open access: yesAnnals of Combinatorics, 2019
8 ...
Ono, Ken, Rolen, Larry
openaire   +3 more sources

An extremal function for the multiplier algebra of the universal Pick space

open access: yes, 2004
Let $H^2_m$ be the Hilbert function space on the unit ball in $C{m}$ defined by the kernel $k(z,w) = (1-langle z,w rangle)^{-1}$. For any weak zero set of the multiplier algebra of $H^2_m$, we study a natural extremal function, $E$.
Wikström, Frank,
core   +6 more sources

Inequalities for analytic functions associated with hyperbolic cosine function

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
In this paper, we investigate the geometric properties of a specific subclass of analytic functions satisfying  the condition f' (z) ≺ cosh(√ z) meaning that the function f '(z) is subordinate to the function cosh(√ z).
T. Azero˘glu, B.N. Örnek, T. Düzenli
doaj   +1 more source

Optimal recovery of derivatives of Hardy class functions [PDF]

open access: yesE3S Web of Conferences, 2019
The paper considers the best linear method for approximating the values of derivatives of Hardy class functions in the unit circle at zero according to the information about the values of functions at a finite number of points z1,...,zn that form a ...
Ovchintsev Mikhail
doaj   +1 more source

Optimal Difference Formulas in the Sobolev Space

open access: yesСовременная математика: Фундаментальные направления, 2022
Optimization of computational methods in functional spaces is one of the main problems of computational mathematics. In this paper, algebraic and functional assertions for the problem of difference formulas are discussed.
Kh. M. Shadimetov, R. N. Mirzakabilov
doaj   +1 more source

Characterizing extremal coefficient functions and extremal correlation functions

open access: yes, 2012
We focus on two dependency quantities of a max-stable random field $X$ on some space $T$: the extremal coefficient function $θ$ which we define on finite sets of $T$ and the extremal correlation function $χ(s,t)=\lim_{x \uparrow \infty} \PP(X_s \geq x \mid X_t \geq x)$.
Strokorb, Kirstin, Schlather, Martin
openaire   +4 more sources

The extremal algebra on two hermitians with square 1 [PDF]

open access: yes, 2002
Let Ea(u,v) be the extremal algebra determined by two hermitians u and v with u2 = v2 = 1. We show that: Ea(u,v) = {f=gu:f,g ε C(T)}, where T is the unit circle; Ea(u,v) is C*-equivelant to C*(G), where G is the infinite dihedral group; most of the
Duncan, J., Crabb, M.J., McGregor, C.M.
core   +1 more source

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