Results 131 to 140 of about 1,361,395 (332)
arXiv, 2019 We consider special elliptic operators in functional spaces on manifolds with a boundary which has some singular points. Such an operator can be represented by a sum of operators, and for a Fredholm property of an initial operator one needs a Fredholm property for an each operator from this sum.
arxiv
Electrical Conductivities and Low Frequency Opacities in the Warm Dense Matter Regime
Contributions to Plasma Physics, EarlyView.ABSTRACT In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average‐atom approximation and of different models for calculating opacities, such as the Ziman or Ziman–Evans models is discussed and the results compared to ab initio simulations.
Mikael Tacu +3 more
wiley +1 more source
Journal of Applied Crystallography, Volume 55, Issue 6, Page 1528-1537, December 2022., 2022 Evaluating crystal structure packings using coordinate root‐mean‐square deviation (RMSD) for N molecules (or N asymmetric units) in a reproducible manner requires metrics to describe the shape of the compared molecular clusters to account for alternative approaches used to prioritize selection of molecules.
Aaron J. Nessler +4 more
wiley +1 more source
Weighted Estimates for Bilinear Operators
Journal of Function Spaces, 2014 We study the boundedness of weighted multilinear operators given by products of finite vectors of Calderón-Zygmund operators. We also investigate weighted estimates for bilinear operators related to Schrödinger operator.
Hua Zhu, Heping Liu
doaj +1 more source
Radiation conditions and spectral theory for 2-body Schrödinger operators with “oscillating” long-range potentials I, the principle of limiting absorption [PDF]
, 1978 Kiyoshi Mochizuki, Jun Uchiyama
openalex +1 more source
Conditional gauge and potential theory for the Schrödinger operator
, 1988 On etend le theoreme de jauge conditionnelle a des operateurs plus generaux et a des domaines moins reguliers.
M. Cranston, E. Fabes, Z. Zhao
semanticscholar +1 more source
Energy Science &Engineering, EarlyView.A clustering approach based on quantum particle swarm optimization (QPSO) and the sector search model is proposed for a new distribution system; it enhances the stability of the power system and reduces the control dimension, improving overall system efficiency.
Wei Liu +8 more
wiley +1 more source
Operator of Time and Generalized Schrödinger Equation
Advances in Mathematical Physics, 2018 The equation describing the change of the state of the quantum system with respect to energy is introduced within the framework of the self-adjoint operator of time in nonrelativistic quantum mechanics.
Slobodan Prvanović
doaj +1 more source
On the Spectra of One-Dimensional Schrödinger Operators With Singular Potentials
Frontiers in Physics, 2019 The paper is devoted to the spectral properties of one-dimensional Schrödinger operators (1)Squ(x)=(-d2dx2+q(x))u(x), x∈ℝ, with potentials q = q0+qs, where q0∈L∞(ℝ) is a regular potential, and qs∈D′(ℝ) is a singular potential with support on a ...
Vladimir S. Rabinovich +2 more
doaj +1 more source
Multilinear integral operators and mean oscillation [PDF]
Proc. Indian Acad. Sci. (Math. Sci.), Vol. 114, No. 3, August
2004, pp. 235-251, 2005 In this paper, the boundedness properties for some multilinear operators related to certain integral operators from Lebesgue spaces to Orlicz spaces are obtained. The operators include Calder\'on--Zygmund singular integral operator, fractional integral operator, Littlewood--Paley operator and Marcinkiewicz operator.
arxiv