Results 1 to 10 of about 3,065,012 (270)

On the Explicit Formula for Eigenvalues, Determinant, and Inverse of Circulant Matrices

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2022
Determining eigenvalues, determinants, and inverse for a general matrix is computationally hard work, especially when the size of the matrix is large enough.
Nur Aliatiningtyas   +2 more
doaj   +1 more source

Alternative Ways of Computing the Numerator Relationship Matrix

open access: yesFrontiers in Genetics, 2021
Pedigree relationships between every pair of individuals forms the elements of the additive genetic relationship matrix (A). Calculation of A−1 does not require forming and inverting A, and it is faster and easier than the calculation of A.
Mohammad Ali Nilforooshan   +2 more
doaj   +1 more source

Robust pathway sampling in phenotype prediction. Application to triple negative breast cancer

open access: yesBMC Bioinformatics, 2020
Background Phenotype prediction problems are usually considered ill-posed, as the amount of samples is very limited with respect to the scrutinized genetic probes.
Ana Cernea   +7 more
doaj   +1 more source

Characteristic polynomial, determinant and inverse of a Fibonacci-Sylvester-Kac matrix

open access: yesSpecial Matrices, 2021
In this paper, we consider a new Sylvester-Kac matrix, i.e., Fibonacci-Sylvester-Kac matrix. We discuss the eigenvalues, eigenvectors and characteristic polynomial of this matrix in two categories based on whether the Fibonacci-Sylvester-Kac matrix order
Jiang Zhaolin, Zheng Yanpeng, Li Tianzi
doaj   +1 more source

On fourth order accuracy stable difference scheme for a multi-point overdetermined elliptic problem

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In this paper fourth order of accuracy difference scheme for approximate solution of a multi-point elliptic overdetermined problem in a Hilbert space is proposed.
C. Ashyralyyev, G. Akyuz
doaj   +1 more source

A COMPUTATION PERSPECTIVE FOR THE EIGENVALUES OF CIRCULANT MATRICES INVOLVING GEOMETRIC PROGRESSION

open access: yesJurnal Matematika UNAND, 2023
In this article, the eigenvalues and inverse of circulant matrices with entries in the first row having the form of a geometric sequence are formulated explicitly in a simple form in one theorem. The method for deriving the formulation of the determinant
SISWANDI SISWANDI   +3 more
doaj   +1 more source

Uniqueness result for a fractional diffusion coefficient identification problem

open access: yesBoundary Value Problems, 2019
In this paper, we establish an identifiability result for the coefficient identification problem in a fractional diffusion equation in a bounded domain from the observation of the Cauchy data on particular subsets of the boundary.
Fadhel Jday, Ridha Mdimagh
doaj   +1 more source

Super Fuzzy Matrix of Inverse in kth Order

open access: yesRatio Mathematica, 2023
Unexpected event modelling is a affluent area of study in fuzzy matrix (FM) modelling. Every fuzzy matrix may be shown as a multidimensional cocept, but standard matrices cannot achieve this without the proper scale.
R. Deepa, Dr. P. Sundararajan
doaj   +1 more source

Mathematical Formulation of Dmh-Based Inverse Optimization

open access: yesFrontiers in Oncology, 2014
Purpose: To introduce the concept of dose-mass based inverse optimization for radiotherapy applications.Materials and Methods: Mathematical derivation of the dose-mass based formalism is presented. This mathematical representation is compared to the most
Ivaylo eMihaylov, Eduardo eMoros
doaj   +1 more source

Explicit determinants, inverses and eigenvalues of four band Toeplitz matrices with perturbed rows

open access: yesSpecial Matrices, 2019
In this paper, four-band Toeplitz matrices and four-band Hankel matrices of type I and type II with perturbed rows are introduced. Explicit determinants, inverses and eigenvalues for these matrices are derived by using a nice inverse formula of block ...
Zhang Maoyun   +2 more
doaj   +1 more source

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