Πλοήγηση ανά Θέμα "Mathematics"
Αποτελέσματα 1-20 από 24
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A-tree: Distributed indexing of multidimensional data for cloud computing environments
(2011)Efficient querying of huge volumes of multidimensional data stored in cloud computing systems has become a necessity, due to the widespread of cloud storage facilities. With clouds getting larger and available data growing ... -
Are computational applications the “crystal ball” in the IVF laboratory? The evolution from mathematics to artificial intelligence
(2018)Mathematics rules the world of science. Innovative technologies based on mathematics have paved the way for implementation of novel strategies in assisted reproduction. Ascertaining efficient embryo selection in order to ... -
Counting the number of real roots in an interval with Vincent's theorem
(2010)It is well known that, in 1829, the French mathematician Jacques Charles Francois Sturm (1803-1855) solved the problem of finding the number of real roots of a polynomial equation f(x) = 0, with rational coefficients and ... -
Distributed skip air index for smart broadcasting in intelligent transportation systems
(2012)Wireless data broadcast received a lot of attention from industries and academia in recent years. In any form of a push-based broadcast, access latency and tuning time are vital issues, and in order to address the tradeoff ... -
A duality scheme for convex control problems with time-delay
(1998)In this paper we examine convex optimal control problems with linear dynamics. Time-delays appear in the convex cost and in the linear dynamics. We consider problems where a delay parameter tau appears in the dynamics and ... -
Involutions on classical crossed products over global fields
(2002)If L/K is a finite Galois extension of the global field K with Galois group G, we denote by A = (L/K, alpha) the crossed product algebra of G over L, where alpha is the factor set of G. We give a criterion when A admits ... -
Irreducibility and extensions of Ostrowski's Theorem
(2012)In this paper an extension of Ostrowski's Theorem for complex square irreducible matrices is presented. Also extensions of similar statements for square complex matrices are analyzed and completed. Most of the statements ... -
Is A is an element of C-n,C-n a general H-matrix?
(2012)H-matrices play an important role in the theory and applications of Numerical Linear Algebra. So, it is very useful to know whether a given matrix A is an element of C-n,C-n, usually the coefficient of a complex linear ... -
Learning object farms and learning design in science education
(2005)A Learning Object (LO) is a collection of digital pieces representing a minimal, independent and standalone educational unit. By combining XML and MathML technologies, together with the computing power of server based ... -
LIMITED APPROXIMATION OF NUMERICAL RANGE OF NORMAL MATRIX
(2010)Let A be an n x n normal matrix, whose numerical range NR[A] is a k-polygon. If a unit vector v is an element of W subset of C(n), with dimW = k and the point v*Av is an element of IntNR[A], then NR[A] is circumscribed to ... -
A new iterative criterion for H-matrices: The reducible case
(2008)H-matrices appear in various areas of science and engineering and it is of vital importance to have an Algorithm to identify the H-matrix character of a certain matrix A epsilon C-n,C-n. Recently, the present authors have ... -
A NEW PARALLEL POLYNOMIAL DIVISION BY A SEPARABLE POLYNOMIAL VIA HERMITE INTERPOLATION WITH APPLICATIONS
(2012)A new parallel division of polynomials by a common separable divisor over a perfect field is presented and this is done by expressing the remainders as derivatives of a unique polynomial. In order to get this results, a ... -
Nonrecursive solution for the discrete algebraic Riccati equation and X plus A*X-1 A = L
(2015)In this paper, we present two new algebraic algorithms for the solution of the discrete algebraic Riccati equation. The first algorithm requires the nonsingularity of the transition matrix and is based on the solution of ... -
Nonstationary Extrapolated Modulus Algorithms for the solution of the Linear Complementarity Problem
(2009)The Linear Complementarity Problem (LCP) has many applications as, e.g., in the solution of Linear and Convex Quadratic Programming, in Free Boundary Value problems of Fluid Mechanics, etc. In the present work we assume ... -
A note on Ostrowski's Theorem
(2013)In this note, a further extension of Ostrowski's Theorem, concerning mainly complex square irreducible matrices, is presented. Specifically, classes of irreducible matrices are determined for which the classical statement: ... -
On Brauer-Ostrowski and Brualdi sets
(2014)For the localization of the spectrum of the eigenvalues of a complex square matrix, the classical Gersgorin Theorem was extended by Ostrowski who used the generalized geometric mean of the row and column sums of the matrix. ... -
On fuzzy compactness
(1999)In this paper we characterize well known fuzzy compactness (see [3], [4], [9], and [10]) using the notion of fuzzy upper limit (see [5]). Also we give and study new fuzzy compactness in fuzzy topological spaces, (C) 1999 ... -
On Generalizations of Gruss Inequality in Inner Product Spaces and Applications
(2010)Using a Kurepa's result for Gramians, we achieve refinements of well-known generalizations of Gruss inequality in inner product spaces. These results are further applied in L(2)(a, b) to derive improvements of some published ... -
On the optimal complex extrapolation of the complex Cayley transform
(2009)The Cayley transform, F := F(A) = (I + A)(-1) (I - A), with A epsilon C(n.n) and -1 is not an element of sigma (A), where sigma(.) denotes spectrum, and its extrapolated counterpart F (omega A), omega epsilon C\{0} and -1 ...