Zobrazeno 1 - 10
of 6 463
pro vyhledávání: '"Block matrix"'
Autor:
Bo Jiang, Yongge Tian
Publikováno v:
AIMS Mathematics, Vol 9, Iss 9, Pp 23544-23563 (2024)
This article explores the mathematical and statistical performances and connections of the two well-known ordinary least-squares estimators (OLSEs) and best linear unbiased estimators (BLUEs) of unknown parameter matrices in the context of a multivar
Externí odkaz:
https://doaj.org/article/415de73d6c3a469fafc4dc0d92b0a796
Publikováno v:
International Journal of Clothing Science and Technology, 2023, Vol. 35, Issue 6, pp. 918-937.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/IJCST-06-2022-0085
Autor:
Yongge Tian
Publikováno v:
Electronic Research Archive, Vol 31, Iss 9, Pp 5866-5893 (2023)
It is common knowledge that matrix equalities involving ordinary algebraic operations of inverses or generalized inverses of given matrices can be constructed arbitrarily from theoretical and applied points of view because of the noncommutativity of
Externí odkaz:
https://doaj.org/article/4686291be12044bcb2205af019ce0d01
Publikováno v:
AIMS Mathematics, Vol 8, Iss 9, Pp 21001-21021 (2023)
In practical applications of regression models, we may meet with the situation where a true model is misspecified in some other forms due to certain unforeseeable reasons, so that estimation and statistical inference results obtained under the true a
Externí odkaz:
https://doaj.org/article/0169adbd6b69465e88e919bbb8057912
Autor:
Huasheng SUN,Yuan ZHANG
Publikováno v:
Journal of Geodesy and Geoinformation Science, Vol 6, Iss 1, Pp 11-30 (2023)
In this study, the problem of bundle adjustment was revisited, and a novel algorithm based on block matrix Cholesky decomposition was proposed to solve the thorny problem of self-calibration bundle adjustment. The innovation points are reflected in t
Externí odkaz:
https://doaj.org/article/8b79449fb4f5446bba282bf63c23cd0a
Publikováno v:
Electronic Research Archive, Vol 30, Iss 7, Pp 2428-2445 (2022)
Our aim is to present new expressions for the Drazin inverse of anti-triangular block matrices under some circumstances. Applying the established new formulae for anti-triangular block matrices, we derive explicit representations for the Drazin inver
Externí odkaz:
https://doaj.org/article/472706c893874fb3bbcc8349048151bd
Autor:
Tian Yongge
Publikováno v:
Demonstratio Mathematica, Vol 55, Iss 1, Pp 866-890 (2022)
A square complex matrix AA is said to be group invertible if there exists a matrix XX such that AXA=AAXA=A, XAX=XXAX=X, and AX=XAAX=XA hold, and such a matrix XX is called the group inverse of AA. The group invertibility of a matrix is one of the fun
Externí odkaz:
https://doaj.org/article/8659cbaa94264289bbecf343957b4ad6
Publikováno v:
Applied General Topology, Vol 23, Iss 2, Pp 425-436 (2022)
We first attempt to determine conditions on a linear relation T such that μT becomes a demicompact linear relation for each μ ∈ [0,1)(see Theorems 2.4 and 2.5). Second, we display some results on Fredholm and upper semi-Fredholm linear relations
Externí odkaz:
https://doaj.org/article/cde195d5f31a4102b44ff0bfdff68640
Publikováno v:
Operator Theory by Example, 2023.
Externí odkaz:
https://doi.org/10.1093/oso/9780192863867.003.0014
Autor:
Mamoni Dhar
Publikováno v:
Neutrosophic Sets and Systems, Vol 50, Pp 46-59 (2022)
The main focus of this article is to discuss the concept of neutrosophic sets, neutrosophic soft sets , neutrosophic soft matrices theory and neutrosophic soft block matrix which are very useful and applicable in various situations involving uncertai
Externí odkaz:
https://doaj.org/article/9c3b05fa30584d1986c35ba33847a828