Results 21 to 30 of about 94,120 (308)

Abelization of join spaces of affine transformations of ordered field with proximity

open access: yesApplied General Topology, 2005
Using groups of affine transformations of linearly ordered fields a certain construction of non-commutative join hypergroups is presented based on the criterion of reproducibility of semi-hypergroups which are determined by ordered semigroups. The aim of
Sárka Hosková
doaj   +1 more source

Histogram Ordering

open access: yesIEEE Access, 2021
Frequency histograms are ubiquitous, being practically used in any field of science. In this paper, we present a partial order for frequency histograms and, to our knowledge, no order of this kind has been yet defined.
Mateu Sbert   +5 more
doaj   +1 more source

Random Ising chain in transverse and longitudinal fields: Strong disorder RG study

open access: yesCondensed Matter Physics, 2023
Motivated by the compound LiHo_xY_(1-x)F_4, we consider the Ising chain with random couplings and in the presence of simultaneous random transverse and longitudinal fields, and study its low-energy properties at zero temperature by the strong disorder ...
T. Pető, F. Iglói, I. A. Kovács
doaj   +1 more source

Witt rings of quadratically presentable fields [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2020
This paper introduces an approach to the axiomatic theory of quadratic forms based on {tmem{presentable}} partially ordered sets, that is partially ordered sets subject to additional conditions which amount to a strong form of local presentability.
Pawel Gladki, Krzysztof Worytkiewicz
doaj  

Numerical simulations of nonlinear and chaotic order parameter responses in bulk antiferroelectrics using ammonium dihydrogen phosphate parameter

open access: yesPhysics of Complex Systems, 2022
In this paper, the nonlinear and chaotic responses of bulk antiferroelectrics are elaborated phenomenologically and numerically. The first ordered phase of bulk antiferroelectrics is formulated by applying calculus of variations to Landau free energy ...
Сью-Чу Лим
doaj   +3 more sources

Optical Properties and Filtering Applications of Coaxial Gold Nanotube Ordered Array

open access: yesGuangtongxin yanjiu, 2021
In order to realize the multi-band tunable filtering of the metamaterial filter in the visible and near infrared bands, the ordered array of coaxial gold nanotubes is numerically simulated by using the Finite-Difference Time-Domain method. We investigate
Jian-xin CHENG   +3 more
doaj   +1 more source

FIELD SANITARY ORDERS [PDF]

open access: yesJournal of the American Medical Association, 1917
The science and practice of military hygiene, not so many years ago, in the field at least and on a large scale, was in a somewhat unsatisfactory state. It is true that we had ideas on the subject—many of them good ones—but some very important things were not known even so recently as the Spanish-American War. For instance, our ideas were comparatively
openaire   +1 more source

Preparation and Application of Two-Dimensional Noble Metal Nanoparticle Ordered Arrays

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2021
Besides the surface plasmon resonance characteristic of noble metal nanoparticles, the two-dimensional(2 D)noble metal nanoparticle ordered arrays can generate new or enhanced optical properties with good stability and reproducibility due to their highly
MEN Dandan; XING Changchang; LI Wenjuan; ZHANG Honghua; LI Yue
doaj   +1 more source

Correlations and screening of topological charges in Gaussian random fields [PDF]

open access: yes, 2003
Two-point topological charge correlation functions of several types of geometric singularity in Gaussian random fields are calculated explicitly, using a general scheme: zeros of n-dimensional random vectors, signed by the sign of their Jacobian ...
Dennis, MR   +2 more
core   +1 more source

Algebraic Solution of Tropical Polynomial Optimization Problems

open access: yesMathematics, 2021
We consider constrained optimization problems defined in the tropical algebra setting on a linearly ordered, algebraically complete (radicable) idempotent semifield (a semiring with idempotent addition and invertible multiplication).
Nikolai Krivulin
doaj   +1 more source

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