Results 21 to 30 of about 1,724,110 (280)

Factoring Formal Maps into Reversible or Involutive Factors [PDF]

open access: yes, 2013
An element $g$ of a group is called reversible if it is conjugate in the group to its inverse. An element is an involution if it is equal to its inverse.
O'Farrell, Anthony G., Zaitsev, Dmitri
core   +2 more sources

Unification of sparse Bayesian learning algorithms for electromagnetic brain imaging with the majorization minimization framework

open access: yesNeuroImage, 2021
Methods for electro- or magnetoencephalography (EEG/MEG) based brain source imaging (BSI) using sparse Bayesian learning (SBL) have been demonstrated to achieve excellent performance in situations with low numbers of distinct active sources, such as ...
Ali Hashemi   +5 more
doaj   +1 more source

The inverse groups? [PDF]

open access: yesCanadian Medical Association Journal, 2009
Lee and colleagues (Improving the quality of care for infants: a cluster randomized controlled trial, Aug. 10 online) have presented an intriguing evaluation of 2 QI interventions in their NICUs.
openaire   +1 more source

Resistance Distance and Kirchhoff Index of $Q$ -Double Join Graphs

open access: yesIEEE Access, 2019
Let Q(G) be the graph derived from G by inserting a new vertex into every edge of G and by connecting edges of these new vertices that are on adjacent edges of G, and Q-double join of G, G1 and G2 denoted by GQ v{G1, G2}, is the graph derived from Q(G ...
Weizhong Wang, Tingyan Ma, Jia-Bao Liu
doaj   +1 more source

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

Inverse Symmetry Breaking and the Exact Renormalization Group [PDF]

open access: yes, 1996
We discuss the question of inverse symmetry breaking at non-zero temperature using the exact renormalization group. We study a two-scalar theory and concentrate on the nature of the phase transition during which the symmetry is broken.
Adams   +31 more
core   +4 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   +1 more source

Parametrizing the time-variation of the "surface term" of stellar p-mode frequencies: application to helioseismic data [PDF]

open access: yes, 2016
The solar-cyle variation of acoustic mode frequencies has a frequency dependence related to the inverse mode inertia. The discrepancy between model predictions and measured oscillation frequencies for solar and solar-type stellar acoustic modes includes ...
Ball, W. H.   +6 more
core   +2 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

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

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