Results 31 to 40 of about 31,156 (211)

Sublinear scaling for time-dependent stochastic density functional theory [PDF]

open access: yesThe Journal of Chemical Physics, 2015
A stochastic approach to time-dependent density functional theory is developed for computing the absorption cross section and the random phase approximation (RPA) correlation energy. The core idea of the approach involves time-propagation of a small set of stochastic orbitals which are first projected on the occupied space and then propagated in time ...
Gao, Yi   +3 more
openaire   +3 more sources

Approximations by multivariate sublinear and Max-product operators under convexity

open access: yesDemonstratio Mathematica, 2018
Here we search quantitatively under convexity the approximation of multivariate function by general multivariate positive sublinear operators with applications to multivariate Max-product operators.
Anastassiou George A.
doaj   +1 more source

Type and cotype of some Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
Type and cotype are computed for Banach spaces generated by some positive sublinear operators and Banach function spaces. Applications of the results yield that under certain assumptions Clarkson's inequalities hold in these spaces.
Mieczyslaw Mastylo
doaj   +1 more source

On the oscillation of second order nonlinear neutral delay difference equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2008
In this paper sufficient conditions are obtained for oscillation of all solutions of a class of nonlinear neutral delay difference equations of the form $\Delta^2(y(n)+p(n)y(n-m))+q(n)G(y(n-k))=0$ under various ranges of $p(n)$. The nonlinear function $G,
A. K. Tripathy
doaj   +1 more source

Boundedness of the Vector-Valued Intrinsic Square Functions on Variable Exponents Herz Spaces

open access: yesMathematics, 2022
In this article, the authors study the boundedness of the vector-valued inequality for the intrinsic square function and the boundedness of the scalar-valued intrinsic square function on variable exponents Herz spaces K˙ρ(·)α,q(·)(Rn).
Omer Abdalrhman Omer   +1 more
doaj   +1 more source

Nonlinear level crossing models [PDF]

open access: yes, 1998
We examine the effect of nonlinearity at a level crossing on the probability for nonadiabatic transitions $P$. By using the Dykhne-Davis-Pechukas formula, we derive simple analytic estimates for $P$ for two types of nonlinear crossings. In the first type,
A. Abragam   +45 more
core   +2 more sources

Anisotropic Hardy Spaces of Musielak-Orlicz Type with Applications to Boundedness of Sublinear Operators

open access: yesThe Scientific World Journal, 2014
Let φ:ℝn×[0,∞)→[0,∞) be a Musielak-Orlicz function and A an expansive dilation. In this paper, the authors introduce the anisotropic Hardy space of Musielak-Orlicz type, HAφ(ℝn), via the grand maximal function.
Baode Li, Dachun Yang, Wen Yuan
doaj   +1 more source

Au42(PET)32 Nanocluster Sensitizer Unlocks the Annihilator Potential of Rubrene, Enabling High‐Performance NIR‐to‐Visible Photon Upconversion

open access: yesAngewandte Chemie, EarlyView.
A needle‐shaped gold nanocluster, Au42(PET)32, serves as a powerful triplet sensitizer, enabling rubrene to fully express its intrinsic annihilator capability (spin statistical factor f = 0.58). This sensitizer–annihilator pair achieves record‐high upconversion internal quantum yields of 21.4% (808 nm excitation) and 15.0% (936 nm excitation ...
Masaaki Mitsui   +2 more
wiley   +2 more sources

Moment bounds for IID sequences under sublinear expectations

open access: yes, 2011
In this paper, with the notion of independent identically distributed (IID) random variables under sublinear expectations introduced by Peng [7-9], we investigate moment bounds for IID sequences under sublinear expectations.
Hu, Feng
core   +1 more source

Strong law of large numbers for weighted sums of m-widely acceptable random variables under sub-linear expectation space

open access: yesAIMS Mathematics
In this article, using the Fuk-Nagaev type inequality, we studied general strong law of large numbers for weighted sums of $ m $-widely acceptable ($ m $-WA, for short) random variables under sublinear expectation space with the integral condition ...
Qingfeng Wu   +3 more
doaj   +1 more source

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