Results 1 to 10 of about 65,638 (264)

Transition graphs of interacting hysterons: structure, design, organization and statistics [PDF]

open access: yesRoyal Society Open Science
Transition graphs capture the memory and sequential response of multistable media, by specifying their evolution under external driving. Microscopically, collections of bistable elements, or hysterons, provide a powerful model for these materials, with ...
Margot Teunisse, Martin van Hecke
doaj   +2 more sources

On contraction coefficients, partial orders and approximation of capacities for quantum channels [PDF]

open access: yesQuantum, 2022
The data processing inequality is the most basic requirement for any meaningful measure of information. It essentially states that distinguishability measures between states decrease if we apply a quantum channel and is the centerpiece of many results in
Christoph Hirche   +2 more
doaj   +1 more source

Generalized Dold Sequences on Partially-Ordered Sets [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2022
Dold sequences constitute an important class of integer sequences that play an important role in combinatorics, number theory, topology and dynamical systems. We generalize the notion of Dold sequence for the case of partially ordered sets and describe their properties.
Graff, Grzegorz   +2 more
openaire   +2 more sources

On Information Orders on Metric Spaces

open access: yesInformation, 2021
Information orders play a central role in the mathematical foundations of Computer Science. Concretely, they are a suitable tool to describe processes in which the information increases successively in each step of the computation.
Oliver Olela Otafudu, Oscar Valero
doaj   +1 more source

A fractional mathematical model with nonlinear partial differential equations for transmission dynamics of severe acute respiratory syndrome coronavirus 2 infection

open access: yesHealthcare Analytics, 2023
This study presents a fractional mathematical model based on nonlinear Partial Differential Equations (PDEs) of fractional variable-order derivatives for the host populations experiencing transmission and evolution of the Severe Acute Respiratory ...
Hayman Thabet, Subhash Kendre
doaj   +1 more source

Partial Order Rank Features in Colour Space

open access: yesApplied Sciences, 2020
Partial orders are the natural mathematical structure for comparing multivariate data that, like colours, lack a natural order. We introduce a novel, general approach to defining rank features in colour spaces based on partial orders, and show that it is
Fabrizio Smeraldi   +3 more
doaj   +1 more source

Non-singular spherical harmonic expressions of geomagnetic vector and gradient tensor fields in the local north-oriented reference frame [PDF]

open access: yesGeoscientific Model Development, 2015
General expressions of magnetic vector (MV) and magnetic gradient tensor (MGT) in terms of the first- and second-order derivatives of spherical harmonics at different degrees/orders are relatively complicated and singular at the poles. In this paper, we
J. Du, C. Chen, V. Lesur, L. Wang
doaj   +1 more source

Homotopy-Sumudu transforms for solving system of fractional partial differential equations

open access: yesAdvances in Difference Equations, 2020
In this paper, we investigate the Sumudu transforms and homotopy analysis method (S-HAM) for solving a system of fractional partial differential equations. A general framework for solving such a kind of problems is presented.
A. K. Alomari
doaj   +1 more source

A New Modified Technique of Adomian Decomposition Method for Fractional Diffusion Equations with Initial-Boundary Conditions

open access: yesJournal of Function Spaces, 2022
In general, solving fractional partial differential equations either numerically or analytically is a difficult task. However, mathematicians have tried their best to make the task easy and promoted various techniques for their solutions. In this regard,
Saadia Masood   +8 more
doaj   +1 more source

Generalized linear model for partially ordered data [PDF]

open access: yesStatistics in Medicine, 2011
Within the rich literature on generalized linear models, substantial efforts have been devoted to models for categorical responses that are either completely ordered or completely unordered. Few studies have focused on the analysis of partially ordered outcomes, which arise in practically every area of study, including medicine, the social sciences ...
Qiang, Zhang, Edward Haksing, Ip
openaire   +2 more sources

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