Results 61 to 70 of about 640 (203)
Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.Abstract Sudden Stratospheric Warmings (SSW) and Elevated Stratopause (ES) events are mid‐to‐high latitudinal, atmospheric wave‐driven phenomena leading to significant changes in wind, temperatures, and vertical mass transport, especially at stratospheric and mesospheric altitudes.
H. Schneider +5 more
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The Explicit Expression of the Drazin Inverse and Its Application
Journal of Applied Mathematics, 2013 We give explicit expressions of (P±Q)d of two matrices P and Q, in terms of P, Q, Pd, and Qd, (P±I)d, under the condition that PQ=P, and apply the result to finding an explicit representation for the Drazin inverse of some 2×2 block matrix.
Xiaoji Liu +3 more
doaj +1 more source
Geophysical Research Letters, Volume 52, Issue 1, 16 January 2025.Abstract This paper investigates the day‐to‐day global tidal variability in the ionosphere/thermosphere system due to fluctuations in the strength of the northern hemisphere stratospheric polar vortex. Using COSMIC‐2 (Constellation Observing System for Meteorology, Ionosphere, and Climate‐2) Global Ionospheric Specification data, ionospheric tides are ...
Deepali Aggarwal +3 more
wiley +1 more source
Weak MPCEP and *CEPMP inverses
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaWe generalize the systems of equations, which introduced the MPCEP and *CEPMP inverses, using a minimal rank weak Drazin inverse and a minimal rank right weak Drazin inverse.
Mosić Dijana
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Full-rank and determinantal representation of the Drazin inverse
, 2000 In this article, we introduce a full-rank representation of the Drazin inverse AD of a given complex matrix A, which is based on an arbitrary full-rank decomposition of Al, l⩾k, where k is the index of A. Using this general representation, we introduce a
Stanimirović, Predrag S. +1 more
core +1 more source
Computational and Mathematical Methods, Volume 2025, Issue 1, 2025.This paper introduces the C-Product Toolbox, a new computational package available for MATLAB and Python, designed to perform operations on third‐order tensors using a tensor product known as the reduced c‐product. The reduced c‐product is a variant of the known c‐product, a tensor product based on the discrete cosine transform and belonging to a ...
Pablo Soto-Quiros +3 more
wiley +1 more source
A Matrix Iteration for Finding Drazin Inverse with Ninth-Order Convergence
Abstract and Applied Analysis, 2014 The aim of this paper is twofold. First, a matrix iteration for finding approximate inverses of nonsingular square matrices is constructed. Second, how the new method could be applied for computing the Drazin inverse is discussed.
A. S. Al-Fhaid +3 more
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Computational and Mathematical Methods, Volume 2025, Issue 1, 2025.This study presents analytical and numerical‐analytical decomposition methods for determining complex one‐parameter generalized inverse Moore–Penrose matrices. The analytical approach is based on the third Moore–Penrose condition, offering three solution options.
Sargis Simonyan +3 more
wiley +1 more source
Determinantal Representations of the Core Inverse and Its Generalizations with Applications
Journal of Mathematics, 2019 In this paper, we give the direct method to find of the core inverse and its generalizations that is based on their determinantal representations. New determinantal representations of the right and left core inverses, the right and left core-EP inverses,
Ivan I. Kyrchei
doaj +1 more source
Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 4, December 2024.Abstract Smoothed particle hydrodynamics (SPH) is a mesh‐free, Lagrangian particle‐based method that is able to simulate multiphase flows in an economical manner. However, its ability to capture the flow regimes and regime transitions in two phase (liquid‐gas) internal flows, such as pipe or channel flows is not yet generally established.
Rishindra Vallem +2 more
wiley +1 more source