# Browsing Faculty of Science by Issue Date

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• (Mineralogical Society of Great Britian, 1997-02)
The North Qoroq centre comprises a series of nested nepheline syenite intrusions and forms part of the midlate Proterozoic Gardar province of South Greenland. Within the centre fractionation has produced varied rock types ...
• (Faculty of Science, University of Regina, 2004)
• (Department of Mathematics and Statistics, University of Regina, 2004)
• (Faculty of Science, University of Regina, 2004-09)
• (Faculty of Science, University of Regina, 2005)
• (Faculty of Science, University of Regina, 2006)
• (Faculty of Science, University of Regina, 2007)
• (Elsevier, 2008)
The fixed-point iteration is a simple method for finding the maximal Hermitian positive definite solutions of the matrix equations $X\pm A^*X^{-1}A=I$ (the plus/minus equations). The convergence of this method ...
• (SIAM, 2009)
A 25-year old and somewhat neglected algorithm of Crawford and Moon attempts to determine whether a given Hermitian matrix pair $(A,B)$ is definite by exploring the range of the function $f(x) = x^*(A + iB)x/|x^*(A + ... • (SIAM, 2009) Hyperbolic quadratic matrix polynomials$Q(\lambda) = \lambda^2 A + \lambda B + C$are an important class of Hermitian matrix polynomials with real eigenvalues, among which the overdamped quadratics are those with ... • (SIAM, 2009) In this paper, we review two types of doubling algorithm and some techniques for analyzing them. We then use the techniques to study the doubling algorithm for three different nonlinear matrix equations in the critical ... • (Elsevier, 2010) We determine and compare the convergence rates of various fixed-point iterations for finding the minimal positive solution of a class of nonsymmetric algebraic Riccati equations arising in transport theory. • (SIAM, 2010) The matrix equation$X+A^TX^{-1}A=Q$has been studied extensively when$A$and$Q$are real square matrices and$Q$is symmetric positive definite. The equation has positive definite solutions under suitable conditions, ... • (Elsevier, 2010) If$A$is a matrix with no negative real eigenvalues and all zero eigenvalues of$A$are semisimple, the principal$p$th root of$A$can be computed by Newton's method or Halley's method, with a preprocessing procedure ... • (SIAM, 2010) In studying the vibration of fast trains, we encounter a palindromic quadratic eigenvalue problem (QEP)$(\lambda^2 A^T + \lambda Q + A)z = 0$, where$A, Q \in \mathbb{C}^{n \times n}$and$Q^T = Q$. Moreover, the matrix ... • (Elsevier, 2011) We study the matrix equation$X+A^{T}X^{-1}A=Q$, where$A$is a complex square matrix and$Q$is complex symmetric. Special cases of this equation appear in Green's function calculation in nano research and also in the ... • (Department of Computer Science, University of Regina, 2011-03-30) Taking into account relationships between interacting objects can improve the understanding of the dynamic model governing their behaviors. Moreover, maintaining a belief about the ongoing activity while tracking allows ... • (Elsevier, 2012) The Green's function approach for treating quantum transport in nano devices requires the solution of nonlinear matrix equations of the form$X+(C^*+{\rm i} \eta D^*)X^{-1}(C+{\rm i} \eta D)=R+{\rm i}\eta P$, where$R$... • (SIAM, 2012) The matrix equation$X+A^{T}X^{-1}A=Q$arises in Green's function calculations in nano research, where$A$is a real square matrix and$Q\$ is a real symmetric matrix dependent on a parameter and is usually indefinite. ...
• (Taylor & Francis, 2013)
We start with a discussion of coupled algebraic Riccati equations arising in the study of linear-quadratic optimal control problem for Markov jump linear systems. Under suitable assumptions, this system of equations has ...