Results 71 to 80 of about 949,602 (209)

General expressions for the Moore-Penrose inverse of a 2 × 2 block matrix [PDF]

open access: yes, 1991
The Moore-Penrose inverse of a 2 × 2 block matrix M = m=acbd is discussed. General expressions for the Moore-Penrose inverse for the block matrix M in terms of the individual blocks A, B, C, D are delivered without any restrictions imposed.
Miao, Jian-Ming
core   +1 more source

Kato’s Type Inequalities in Terms of Moore–Penrose Inverse and Applications for Norm and Numerical Radius of Hilbert Space Operators

open access: yesAxioms
This paper develops Kato-type inequalities for bounded operators on Hilbert spaces by using the Moore–Penrose inverse of closed range operators. The results extend classical forms of Kato’s inequality to products involving a closed range operator and ...
Najla Altwaijry   +1 more
doaj   +1 more source

On generalized inverses of regular elements in an arbitrary semiring

open access: yes上海师范大学学报. 自然科学版, 2018
In this paper, we investigate the generalized invertibility for regular elements in an arbitrary semiring. We give some sufficient conditions for the existence of a special kind of {1,2} inverse of a regular element a in an arbitrary semiring and give ...
Israr Ali Khan, Wang Qingwen
doaj   +1 more source

Prospective Head Motion Correction in T1‐ and T2‐Weighted Long Echo Train Sequences Using Servo Navigation

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 4, Page 1741-1754, October 2026.
ABSTRACT Purpose To integrate MR‐based servo navigation in MPRAGE and 3D‐TSE sequences and demonstrate its potential for prospective head motion correction in structural imaging. Methods Repeated modules of servo navigators were inserted before each preparation pulse of MPRAGE and 3D‐TSE sequences (before‐prep) for rapid convergence of motion parameter
Matthias Serger   +7 more
wiley   +1 more source

A Genuine Extension of The Moore-Penrose Inverse to Dual Matrices

open access: yes, 2023
The Moore-Penrose inverse is a genuine extension of the matrix inverse. Given a complex matrix, there uniquely exists another complex matrix satisfying the four Moore-Penrose conditions, and if the original matrix is nonsingular, it is exactly the ...
Cui, Chunfeng, Qi, Liqun
core  

About the generalized LM-inverse and the weighted Moore–Penrose inverse [PDF]

open access: yesApplied Mathematics and Computation, 2010
The recursive method for computing the generalized LM-inverse of a constant rectangular matrix augmented by a column vector is proposed in Udwadia and Phohomsiri (2007) [16] and [17]. The corresponding algorithm for the sequential determination of the generalized LM-inverse is established in the present paper. We prove that the introduced algorithm for
Milan B. Tasic   +2 more
openaire   +5 more sources

Rapid Estimation of Global Sea Surface Temperatures From Sparse Streaming In Situ Observations

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Reconstructing high‐resolution sea surface temperatures (SST) from staggered SST measurements is essential for analyzing earth system processes. However, when SST measurements are sparse, the resulting inferred SST fields are rather inaccurate.
Cassidy All   +5 more
wiley   +1 more source

A Family of Arbitrary High-Order Iterative Methods for Approximating Inverse and the Moore–Penrose Inverse

open access: yesCommunications in Advanced Mathematical Sciences, 2020
In this work, a family of iterative algorithms for approximating the inverse of a square matrix and the Moore-Penrose inverse of a non-square one is proposed.
Esmaeil Kokabifar
doaj   +1 more source

Quantum Turing automata [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
A denotational semantics of quantum Turing machines having a quantum control is defined in the dagger compact closed category of finite dimensional Hilbert spaces.
Miklós Bartha
doaj   +1 more source

Panel Sequential Group Estimation of Interactive Effects Models

open access: yesOxford Bulletin of Economics and Statistics, Volume 88, Issue 5, Page 1248-1266, October 2026.
ABSTRACTThis paper proposes a novel procedure to identify latent groups in the slopes of panel data models with interactive effects. The method is straightforward to apply and relies only on closed‐form estimators when evaluating the objective function. This achieves substantial computational gains compared to alternative non‐linear methods and enables
Ignace De Vos, Joakim Westerlund
wiley   +1 more source

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