Results 111 to 120 of about 16,710 (257)
MathematicsFor solving the continuous Sylvester equation, a class of Hermitian and skew-Hermitian based multiplicative splitting iteration methods is presented. We consider two symmetric positive definite splittings for each coefficient matrix of the continuous ...
Mohammad Khorsand Zak +1 more
doaj +1 more source
Advances in Mechanical Engineering, 2018 In this article, to better implement the modified positive-definite and skew-Hermitian splitting preconditioners studied recently (Numer. Algor., 72 (2016) 243–258) for generalized saddle point problems, a class of inexact modified positive-definite and ...
Qin-Qin Shen, Quan Shi
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Business Strategy and the Environment, EarlyView.ABSTRACT This research aims to investigate the relationship between green innovation and competitive advantage through a bibliometric analysis. The data were obtained from the widely used social science databases, Web of Science (WoS) and Scopus, and then processed using the open‐source programming language R.
Mustafa Tuncer Okumus
wiley +1 more source
A Quest for Positive Definite Matrices over Finite Fields [PDF]
, 2018 Positive definite matrices make up an interesting and extremely useful subset of Hermitian matrices. They are particularly useful in exploring convex functions and finding minima for functions in multiple variables.
Hanna, Erin Patricia
core +1 more source
Special MatricesThe generalized eigenvalue problem is a significant topic with numerous applications in scientific and technological computing. Therefore, verifying the reliability of the results produced by numerical solvers is crucial.
Ozaki Katsuhisa, Terao Takeshi
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Battery Energy, Volume 4, Issue 2, March 2025.Lithium batteries constitute a pivotal component in electric vehicles (EVs) owing to their rechargeability and high‐power output capabilities. ABSTRACT Lithium batteries constitute a pivotal component in electric vehicles (EVs) owing to their rechargeability and high‐power output capabilities.
Mohsen Alizadeh Afroozi +4 more
wiley +1 more source
Traditional models chemical kinetics and potentially streaming equation for a closed system
Тонкие химические технологии, 2014 The paper analyzes the communication matrix coefficients reagiruemostey simple subsystems and the coefficient matrix formed independent subsystems simple reagents chemically reacting systems with chemical kinetics.
V. I. Bykov, I. E. Starostin
doaj
A Fixed Point Theorem for Monotone Maps and Its Applications to Nonlinear Matrix Equations
Journal of Mathematics, 2015 By using the fixed point theorem for monotone maps in a normal cone, we prove a uniqueness theorem for the positive definite solution of the matrix equation X=Q+A⁎f(X)A, where f is a monotone map on the set of positive definite matrices.
Dongjie Gao
doaj +1 more source
Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions
Canadian Journal of Statistics, EarlyView.Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni +2 more
wiley +1 more source
Canadian Journal of Statistics, EarlyView.Abstract Annual tree growth is a complex biological process. Modelling radial growth in the trunk by linear‐circular regression with one mode and correlated errors has allowed the definition and assessment of a preferred direction for 1 and 2 years. Here, modified F$$ F $$‐tests are presented for 3 years, 1 mode/year; 1 year, 2 modes for possible main ...
Pierre Dutilleul +2 more
wiley +1 more source