Results 11 to 20 of about 458,395 (307)
The group inverse of a product [PDF]
Linear and Multilinear Algebra, 2015 In this paper, we characterize the existence and give an expression of the group inverse of a product of two regular elements by means of a ring unit.
Mary, Xavier, Patrício, Pedro
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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
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On the continuity of the group inverse [PDF]
Operators and Matrices, 2012 Supported by Spanish Project MTM2010-18539. Supported by grants (HCIC201103) of Guangxi Key Laboratory of Hybrid Computational and IC Design Analysis Open Fund.
Benítez López, Julio, LIU, XIAOJI
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The group inverse of the nivellateur [PDF]
Linear and Multilinear Algebra, 2017 ABSTRACTWe shall derive necessary and sufficient conditions for the nivellateur to have a group inverse over an algebraically closed field. We then extend these results to arbitrary fields.
Hartwig, R. E., Patrício, Pedro
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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). The linear system of BM makes the group structure of the Geroch group manifest and we analyse the relation of this group structure to the
Katsimpouri, Despoina +2 more
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The abelianization of inverse limits of groups [PDF]
Israel Journal of Mathematics, 2018 The abelianization is a functor from groups to abelian groups, which is left adjoint to the inclusion functor. Being a left adjoint, the abelianization functor commutes with all small colimits. In this paper we investigate the relation between the abelianization of a limit of groups and the limit of their abelianizations.
Ilan Barnea, Saharon Shelah
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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
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Matrix Analysis for Continuous-Time Markov Chains
Special Matrices, 2021 Continuous-time Markov chains have transition matrices that vary continuously in time. Classical theory of nonnegative matrices, M-matrices and matrix exponentials is used in the literature to study their dynamics, probability distributions and other ...
Le Hung V., Tsatsomeros M. J.
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The group inverse of subdivision networks [PDF]
Electronic Notes in Discrete Mathematics, 2016 In this paper, given a network and a subdivision of it, we show how the Group Inverse of the subdivision network can be related to the Group Inverse of initial given network. Our approach establishes a relationship between solutions of related Poisson problems on both networks and takes advantatge on the definition of the Group Inverse matrix.
Carmona Mejías, Ángeles +2 more
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A combinatorial expression for the group inverse of symmetric M-matrices
Special Matrices, 2021 By using combinatorial techniques, we obtain an extension of the matrix-tree theorem for general symmetric M-matrices with no restrictions, this means that we do not have to assume the diagonally dominance hypothesis.
Carmona A., Encinas A.M., Mitjana M.
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