Results 41 to 50 of about 561,362 (306)

Trace inequalities for positive semidefinite matrices

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
Certain trace inequalities for positive definite matrices are generalized for positive semidefinite matrices using the notion of the group generalized inverse.
Choudhury Projesh Nath, Sivakumar K.C.
doaj   +1 more source

On the continuity of the group inverse in $C^*$-algebras [PDF]

open access: yesBanach Journal of Mathematical Analysis, 2014
[EN] Let {a_n} be a sequence of group invertible elements of a unital C* algebra A that converges to a. We present some equivalent conditions for the group invertibility of a and for the convergence of {a^#_n} to a#.
Benítez, J.   +2 more
openaire   +5 more sources

Inversion is Possible in Groups with no Periodic Automorphisms [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2015
AbstractThere exist infinite finitely presented torsion-free groups G such that Aut(G) and Out(G) are torsion free but G has an automorphism sending some non-trivial element to its inverse.
Bridson, Martin R., Short, Hamish
openaire   +3 more sources

Advancing Structural Health Monitoring with Deep Belief Network-Based Classification

open access: yesMathematics
Structural health monitoring (SHM) plays a critical role in ensuring the safety and longevity of civil infrastructure by enabling the early detection of structural changes and supporting preventive maintenance strategies.
Álvaro Presno Vélez   +2 more
doaj   +1 more source

Classification and Prediction of Topological Insulators by Using the Density of States

open access: yesMathematics
In order to characterize topological insulators it is customary to use representations of the electronic structure, such as the band structure, where the energy of electrons is represented as a function of their momenta.
Alejandro Díaz-Nadales   +3 more
doaj   +1 more source

Theoretical and Computational Methods to Resistance Distances in Novel Graphs Operations

open access: yesIEEE Access, 2019
Motivated by the recent research on the computation of resistance distance, this paper aims to compute resistance distance in two classes of graphs, which are generated by three graphs.
Li Zhang, Jia-Bao Liu
doaj   +1 more source

Gait Initiation Impairment in Patients with Parkinson’s Disease and Freezing of Gait

open access: yesBioengineering, 2022
Freezing of gait (FOG) is a sudden episodic inability to produce effective stepping despite the intention to walk. It typically occurs during gait initiation (GI) or modulation and may lead to falls.
Chiara Palmisano   +5 more
doaj   +1 more source

The group inverse of a product [PDF]

open access: yesLinear 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, Patricio, Pedro
openaire   +2 more sources

Inverse Synthetic Aperture Radar Sparse Imaging Exploiting the Group Dictionary Learning

open access: yesRemote Sensing, 2021
Sparse imaging relies on sparse representations of the target scenes to be imaged. Predefined dictionaries have long been used to transform radar target scenes into sparse domains, but the performance is limited by the artificially designed or existing ...
Changyu Hu   +3 more
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy