Results 1 to 10 of about 15,121,811 (367)
Open Mathematics, 2018 In this paper, we introduce the weak group inverse (called as the WG inverse in the present paper) for square complex matrices of an arbitrary index, and give some of its characterizations and properties.
Wang Hongxing, Chen Jianlong
doaj +5 more sources
The (2,2,0) group inverse problem [PDF]
Applied Mathematics and Computation, 2010 We characterize the existence of the group inverse of a two by two matrix with zero (2,2) entry, over a ring by means of the existence of the inverse of a suitable function of the other three entries.
Hartwig, Robert E., Patrício, Pedro
core +3 more sources
Inverse Scattering and the Geroch Group [PDF]
Journal of High Energy Physics, 2013 We study the integrability of gravity-matter systems in D=2 spatial dimensions with matter related to a symmetric space G/K using the well-known linear systems of Belinski-Zakharov (BZ) and Breitenlohner-Maison (BM).
Katsimpouri, Despoina +2 more
core +4 more sources
Inverse limits of topological group cohomologies [PDF]
Proceedings of the American Mathematical Society, 1976 For second countable locally compact almost connected groups G G and A A , where A A is abelian and G G acts on A A continuously, it is shown that it is possible to represent A A as an inverse limit of Lie groups {
Arnold J. Insel
openaire +2 more sources
AIMS Mathematics, 2022 In this paper, we study a kind of dual generalized inverses of dual matrices, which is called the dual group inverse. Some necessary and sufficient conditions for a dual matrix to have the dual group inverse are given.
Jin Zhong , Yilin Zhang
doaj +2 more sources
The Group Inverse of the Combinations of Two Idempotent Operators [PDF]
Abstract and Applied Analysis, 2013 We present some inverses and group inverses results for linear combinations of two idempotents and their products.
Shunqin Wang, Chunyuan Deng
doaj +2 more sources
Weighted MP weak group inverse
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaTo extent the notion of the MP weak group inverse for square matrices, we introduce the concept of the weighted MP weak group inverse for rectangular matrices.
Mosić Dijana, Marovt Janko
doaj +2 more sources
Bayesian Random Tomography of Particle Systems
Frontiers in Molecular Biosciences, 2021 Random tomography is a common problem in imaging science and refers to the task of reconstructing a three-dimensional volume from two-dimensional projection images acquired in unknown random directions. We present a Bayesian approach to random tomography.
Nima Vakili +2 more
doaj +1 more source
Robust pathway sampling in phenotype prediction. Application to triple negative breast cancer
BMC 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
Prediction of Protein Tertiary Structure via Regularized Template Classification Techniques
Molecules, 2020 We discuss the use of the regularized linear discriminant analysis (LDA) as a model reduction technique combined with particle swarm optimization (PSO) in protein tertiary structure prediction, followed by structure refinement based on singular value ...
Óscar Álvarez-Machancoses +2 more
doaj +1 more source