Results 1 to 10 of about 458,296 (208)

Weak group inverse [PDF]

open access: yesOpen 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   +4 more sources

Inverse limits of solvable groups [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1963
In this paper we generalize to groups of Galois type some results of P. Hall on finite solvable groups [l; 2; 3]. We need, in a modified form, some results of van Dantzig: the definition of supernatural numbers (which are related to van Dantzig's universal numbers) and Theorem 5, which he proved for ordinary ?>-Sylow subgroups [6].
Ethan D. Bolker
openalex   +3 more sources

Groups, semilattices and inverse semigroups. II [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1974
An inverse semigroup S is called proper if the equations e a = e = e 2 ea = e = {e^2} together imply a 2 = a {a^2} = a for each a, a ,
D. B. McAlister
openalex   +3 more sources

On the Non-Inverse Graph of a Group

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2022
Let (G, *) be a finite group and S = {u ∈ G|u ≠ u−1}, then the inverse graph is defined as a graph whose vertices coincide with G such that two distinct vertices u and v are adjacent if and only if either u * v ∈ S or v * u ∈ S.
Amreen Javeria, Naduvath Sudev
doaj   +2 more sources

Solving an Inverse Sturm-Liouville Problem by a Lie-Group Method [PDF]

open access: goldBoundary Value Problems, 2008
Solving an inverse Sturm-Liouville problem requires a mathematical process to determine unknown function in the Sturm-Liouville operator from given data in addition to the boundary values.
Chein-Shan Liu
doaj   +3 more sources

Group Inverse of the Laplacian of Connections of Networks [PDF]

open access: greenDiscrete Applied Mathematics, 2018
In previous works the group inverse of a network obtained by some perturbations, as the deletion of a vertex, the addition of a new vertex, contraction of an edge, etc. is obtained in terms of the group inverse of the original network. In this work, two given networks are connected with some new edges and the group inverse of the new network is related
Silvia Gago
openalex   +5 more sources

A Group Affine-Based Inverse Alignment Method for High-Precision Rotational Inertial Navigation Systems [PDF]

open access: yesSensors
Initial alignment plays a pivotal role in inertial navigation systems, as even small orientation errors introduced at startup can significantly degrade subsequent positioning and attitude estimates.
Chao Liu   +9 more
doaj   +2 more sources

The Semigroup and the Inverse of the Laplacian on the Heisenberg Group [PDF]

open access: hybridCubo, 2010
By decomposing the Laplacian on the Heisenberg group into a family of parametrized partial differential operators Lt ,t ∈ R {0}, and using parametrized Fourier-Wigner transforms, we give formulas and estimates for the strongly continuous one ...
APARAJITA DASGUPTA, M.W WONG
doaj   +2 more sources

Allele-Specific, Inverse-PCR Amplification for Genotyping MN Blood Group

open access: goldBioTechniques, 1998
Zhi-Xiang Li   +3 more
doaj   +2 more sources

Bayesian Random Tomography of Particle Systems

open access: yesFrontiers 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

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