Results 11 to 20 of about 16,496,952 (144)

Fast Algorithms for Solving FLS R-Factor Block Circulant Linear Systems and Inverse Problem of AX=b [PDF]

open access: yesAbstract and Applied Analysis, 2014
Block circulant and circulant matrices have already become an ideal research area for solving various differential equations. In this paper, we give the definition and the basic properties of FLS R-factor block circulant (retrocirculant) matrix over ...
Zhaolin Jiang
doaj   +2 more sources

On the spectral norm of r-circulant matrices with the Pell and Pell-Lucas numbers [PDF]

open access: yesJournal of Inequalities and Applications, 2016
Let us define A = C r ( a 0 , a 1 , … , a n − 1 ) $A=C_{r}(a_{0},a_{1},\ldots,a_{n-1})$ to be a n × n $n \times n$ r-circulant matrix. The entries in the first row of A = C r ( a 0 , a 1 , … , a n − 1 ) $A=C_{r}(a_{0},a_{1},\ldots,a_{n-1})$ are a i = P i
Ramazan Türkmen, Hasan Gökbaş
doaj   +2 more sources

On Circulant Embedding for Gaussian Random Fields in R [PDF]

open access: yesJournal of Statistical Software, 2013
The high-dimensionality typically associated with discretized approximations to Gaussian random fields is a considerable hinderance to computationally efficient methods for their simulation.
Tilman M. Davies, David Bryant
doaj   +2 more sources

关于(k,h)-Fibonacci和(k,h)-Lucas数的r-循环矩阵的谱范数(On the spectral norms of r-circulant matrices with the (k,h)-Fibonacci and (k,h)-Lucas numbers)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
Based on the general theory of matrix and some properties of (k,h)-Fibonacci and (k,h)-Lucas numbers,the upper and lower bounds for the spectral norms of r-circulant matrices and are given.
SHENShouqiang(沈守强)   +1 more
doaj   +2 more sources

A note on r-circulant matrices involving generalized Narayana numbers [PDF]

open access: yes, 2023
In order to further connect structured matrices and integer sequences, r-circulant matrices involving the generalized Narayana numbers are considered. Estimates for spectral norms bounds of such matrices are presented and their eigenvalues are determined.
Pešović, Marko, Pucanović, Zoran
core   +1 more source

Cartesian MaxGIRF: Model-based EPI reconstruction incorporating gradient nonlinearity and concomitant field effects. [PDF]

open access: yesMagn Reson Med
Abstract Purpose Lower field strength scanners with large bore size or complex geometries, and scanners with stronger gradient systems experience increased gradient nonlinearity and concomitant fields, each of which causes distortions in EPI. Current correction approaches based on image‐domain interpolation introduce undesirable spatial blurring.
Lee NG, Cui SX, Nayak KS.
europepmc   +2 more sources

Aggregating distributed energy resources for grid flexibility services: A distributed game theoretic approach

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView., 2023
Abstract We propose a hierarchical energy management scheme for aggregating Distributed Energy Resources (DERs) for grid flexibility services. To prevent a direct participation of numerous prosumers in the wholesale electricity market, aggregators, as self‐interest agents in our scheme, incentivize prosumers to provide flexibility. We firstly model the
Xiupeng Chen   +3 more
wiley   +1 more source

Explicit Euclidean Norm, Eigenvalues, Spectral Norm and Determinant of Circulant Matrix with the Generalized Tribonacci Numbers

open access: yes, 2021
In this paper, we obtain explicit Euclidean norm, eigenvalues, spectral norm and determinant of circulant matrix with the generalized Tribonacci (generalized (r, s, t)) numbers.
Yüksel Soykan
core   +1 more source

FIELD FORMATION OF CIRCULANT MATRIX [PDF]

open access: yes, 2020
The axioms of fields satisfy over sets of numbers such as , , and . Generally, a set matrix is not commutative for binary multiplication properties, such that cannot satisfy of field axioms.
Fahlevi, M. R. (Mahfudz)   +2 more
core   +1 more source

广义循环布尔矩阵三明治半群中的完全正则元(The fully regular elements of the sandwich semigroup of generalized circulant Boolean matrices)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
Let n be a positive integer, and Cn(r) be the set of all n× nr-circulant matrices over the Boolean algebra B ={0, 1}, . For any fixed r-circulant matrix C(C≠0) in Gn.
CHENJin-song(陈锦松)   +1 more
doaj   +1 more source

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