Results 31 to 40 of about 245,049 (165)
Aperiodic order and pure point diffraction [PDF]
, 2008 We give a leisurely introduction into mathematical diffraction theory with a focus on pure point diffraction. In particular, we discuss various characterisations of pure point diffraction and common models arising from cut and project schemes. We finish with a list of open problems.
arxiv +1 more source
Relating the pure and ensemble density matrix functional [PDF]
J. Chem. Phys. 149, 231102 (2018), 2018 A crucial theorem in Reduced Density Matrix Functional Theory (RDMFT) suggests that the universal pure and ensemble functional coincide on their common domain of pure N-representable one-matrices. We refute this by a comprehensive analysis of the geometric picture underlying Levy's constrained search. Moreover, we then show that the ensemble functional
arxiv +1 more source
Principal Intuitionistic Fuzzy Ideals and Filters on a Lattice
Discussiones Mathematicae - General Algebra and Applications, 2020 In this paper, we generalize the notion of principal ideal (resp. filter) on a lattice to the setting of intuitionistic fuzzy sets and investigate their various characterizations and properties.
Boudaoud Sarra +2 more
doaj +1 more source
Polarized ensembles of random pure states [PDF]
Journal of Physics A: Mathematical and Theoretical 46 (2013)
315306, 2013 A new family of polarized ensembles of random pure states is presented. These ensembles are obtained by linear superposition of two random pure states with suitable distributions, and are quite manageable. We will use the obtained results for two purposes: on the one hand we will be able to derive an efficient strategy for sampling states from ...
arxiv +1 more source
Hermite-Hadamard inequalities for exponential type harmonically $ ( \alpha, s)_{h}$-convex functions [PDF]
Journal of Mahani Mathematical ResearchIn this paper, the authors study and introduce some new integral forms of Hermite-Hadamard inequalities in the form of harmonically convex functions known as exponential type harmonically $ (\alpha, s)_{h}$-convex function.
Kemi Apanpa +2 more
doaj +1 more source
ADMITTING CENTER MAPS ON MULTIPLICATIVE METRIC SPACE [PDF]
Journal of Algebraic Systems, 2020 In this work, we investigate admitting center map on multiplicative metric space and establish some fixed point theorems for such maps. We modify the Banach contraction principle and the Caristi's fixed point theorem for M-contraction ...
M. H. LABBAF Ghasemi Zavareh +2 more
doaj +1 more source
F(R) gravity in purely affine formulation [PDF]
Int.J.Mod.Phys.A23:1891-1901,2008, 2007 The purely affine, metric-affine and purely metric formulation of general relativity are dynamically equivalent and the relation between them is analogous to the Legendre relation between the Lagrangian and Hamiltonian dynamics. We show that one cannot construct a dynamically equivalent, purely affine Lagrangian from a metric-affine or metric F(R ...
arxiv +1 more source
Boundary Value Problems, 2020 Here, a nonlocal nonlinear operator known as the fractional ( p , q ) $(p,q)$ -Laplacian is considered. The existence of a mountain pass solution is proved via critical point theory and variational methods.
F. Behboudi, A. Razani, M. Oveisiha
doaj +1 more source
On Edge H-Irregularity Strength of Hexagonal and Octagonal Grid Graphs
Journal of Mathematics, 2022 The edge H-irregularity strength, ehsΓ,H, of a graph Γ is the smallest integer k, such that Γ has an H-irregular edge k-labeling. In this study, we compute the exact value of edge H-irregularity strength of hexagonal and octagonal grid graphs.
Muhammad Ibrahim +3 more
doaj +1 more source
Domination and Kwapień’s factorization theorems for positive Cohen p–nuclear m–linear operators
Moroccan Journal of Pure and Applied Analysis, 2021 In this paper, we introduce and study the concept of positive Cohen p-nuclear multilinear operators between Banach lattice spaces. We prove a natural analog to the Pietsch domination theorem for this class.
Bougoutaia Amar +2 more
doaj +1 more source