Results 11 to 20 of about 1,732,355 (284)
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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Inverse Symmetry Breaking and the Exact Renormalization Group [PDF]
, 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
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The group inverse of subdivision networks [PDF]
, 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.
Carmona Mejías, Ángeles +2 more
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A class of singular Ro-matrices and extensions to semidefinite linear complementarity problems [PDF]
Yugoslav Journal of Operations Research, 2013 For ARnxn and qRn, the linear complementarity problem LCP(A, q) is to determine if there is xRn such that x ≥ 0; y = Ax + q ≥ 0 and xT y = 0. Such an x is called a solution of LCP(A,q).
Sivakumar K.C.
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Linear Algebra and its Applications, 1991 The main result in this paper is a very technical theorem which characterizes those nonnegative block lower triangular matrices which have a nonnegative group inverse. A consequence (Theorem 2) is that if \(A\) is a real square matrix such that (i) some positive power of \(A\) is a nonnegative matrix, and (ii) the Drazin inverse of \(A\) is nonnegative,
Neumann, M., Werner, H.J.
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Gait Event Prediction Using Surface Electromyography in Parkinsonian Patients
Bioengineering, 2023 Gait disturbances are common manifestations of Parkinson’s disease (PD), with unmet therapeutic needs. Inertial measurement units (IMUs) are capable of monitoring gait, but they lack neurophysiological information that may be crucial for studying gait ...
Stefan Haufe +3 more
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Fiat categorification of the symmetric inverse semigroup IS_n and the semigroup F^*_n [PDF]
, 2017 Starting from the symmetric group $S_n$, we construct two fiat $2$-categories. One of them can be viewed as the fiat "extension" of the natural $2$-category associated with the symmetric inverse semigroup (considered as an ordered semigroup with respect ...
Martin, Paul, Mazorchuk, Volodymyr
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M-matrix and inverse M-matrix extensions
Special Matrices, 2020 A class of matrices that simultaneously generalizes the M-matrices and the inverse M-matrices is brought forward and its properties are reviewed. It is interesting to see how this class bridges the properties of the matrices it generalizes and provides a
McDonald J.J. +6 more
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The group inverse of circulant matrices depending on four parameters
Special Matrices, 2021 Explicit expressions for the coefficients of the group inverse of a circulant matrix depending on four complex parameters are analytically derived. The computation of the entries of the group inverse are now reduced to the evaluation of a polynomial ...
Carmona A. +3 more
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Canadian 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.
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