Results 21 to 30 of about 11,878,887 (322)

The Nullity, Rank, and Invertibility of Linear Combinations of k-Potent Matrices

open access: yesMathematics, 2020
Baksalary et al. (Linear Algebra Appl., doi:10.1016/j.laa.2004.02.025, 2004) investigated the invertibility of a linear combination of idempotent matrices. This result was improved by Koliha et al.
Marina Tošić   +3 more
doaj   +1 more source

Spatial analysis of Environmental Suitability of Shiraz City Using Environmental Suitability Analysis [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2018
Urban Physical development has been the major concern of urban planners during recent years, therefore, better understanding of urban and its development is necessary for sustainable development.
Dr.Mohammadreza Rezaei   +2 more
doaj   +1 more source

Incorporating a New Summary Statistic into the Min–Max Approach: A Min–Max–Median, Min–Max–IQR Combination of Biomarkers for Maximising the Youden Index

open access: yesMathematics, 2021
Linearly combining multiple biomarkers is a common practice that can provide a better diagnostic performance. When the number of biomarkers is sufficiently high, a computational burden problem arises. Liu et al. proposed a distribution-free approach (min–
Rocío Aznar-Gimeno   +4 more
doaj   +1 more source

Compact linear combination of composition operators on Bergman spaces

open access: yesJournal of Functional Analysis, 2020
Motivated by the question of Shapiro and Sundberg raised in 1990, study on linear combinations of composition operators has been a topic of growing interest.
B. Choe, H. Koo, Maofa Wang
semanticscholar   +1 more source

The invariant measure of homogeneous Markov processes in the quarter-plane: Representation in geometric terms [PDF]

open access: yes, 2011
We consider the invariant measure of a homogeneous continuous-time Markov process in the quarter-plane. The basic solutions of the global balance equation are the geometric distributions.
Boucherie, Richard J.   +2 more
core   +10 more sources

Verifiable computation scheme of batch matrix multiplication based on triple perturbation and linear combination

open access: yes网络与信息安全学报
With the development of cloud computing and internet of things technology, verifiable computing has been widely used as a new computing technology. While verifiable computing brings convenience to users, there are also security challenges: data privacy ...
Tianpeng ZHANG, Zhiyu REN, Xuehui DU, Haichao WANG
doaj   +5 more sources

On the singular factor of a linear combination of holomorphic functions [PDF]

open access: yes, 2012
We prove that the linear combinations of functions $f_0,...,f_n$ in $H^\infty$ have "few" singular inner factors, provided that the $f_j$'s are suitably smooth up to the boundary, while in general this is no longer true.Comment: 4 ...
Dyakonov, Konstantin M.
core   +3 more sources

Combining Linear and Nonlinear Diffusion [PDF]

open access: yesAdvanced Nonlinear Studies, 2004
Abstract In this paper we study a generalized porous medium equation where the diffusion rate, say m(x) -spatially heterogeneous- is assumed to be linear, m = 1, on a piece of the support domain, Ω1 and slow nonlinear, m(x) > 1, in its complement, Ωm := Ω \ Ω̄1.
Delgado Delgado, Manuel   +2 more
openaire   +3 more sources

Topological charge of a linear combination of optical vortices: topological competition.

open access: yesOptics Express, 2020
We theoretically show that optical vortices conserve the integer topological charge (TC) when passing through an arbitrary aperture or shifted from the optical axis of an arbitrary axisymmetric carrier beam.
V. Kotlyar, A. Kovalev, A. Volyar
semanticscholar   +1 more source

Partially Linear Models under Data Combination

open access: yesReview of Economic Studies, 2022
Abstract We study partially linear models when the outcome of interest and some of the covariates are observed in two different datasets that cannot be linked. This type of data combination problem arises very frequently in empirical microeconomics.
D'Haultfoeuille, Xavier   +2 more
openaire   +4 more sources

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