Results 21 to 30 of about 3,873,104 (284)
Gabor Dual Frames with Characteristic Function Window [PDF]
Sahand Communications in Mathematical Analysis, 2021 The duals of Gabor frames have an essential role in reconstruction of signals. In this paper we find a necessary and sufficient condition for two Gabor systems $\left(\chi_{\left[c_1,d_1\right)},a,b\right)$ and $\left(\chi_{\left[c_2,d_2\right)},a,b ...
Mohammad Ali Hasankhani Fard
doaj +1 more source
Estimating Matrix Condition Numbers [PDF]
SIAM Journal on Scientific and Statistical Computing, 1980 In this note we study certain estimators for the condition number of a matrix which, given an $LU$ factorization of a matrix, are easily calculated. The main observations are that the choice of estimator is very norm-dependent, and that although some simple estimators are consistently bad, none is consistently best.
openaire +1 more source
On the Slowly Decreasing Sequences of Fuzzy Numbers
Abstract and Applied Analysis, 2013 We introduce the slowly decreasing condition for sequences of fuzzy numbers. We prove that this is a Tauberian condition for the statistical convergence and the Cesáro convergence of a sequence of fuzzy numbers.
Özer Talo, Feyzi Başar
doaj +1 more source
Improving Preschoolers' Arithmetic through Number Magnitude Training: The Impact of Non-Symbolic and Symbolic Training. [PDF]
PLoS ONE, 2016 The numerical cognition literature offers two views to explain numerical and arithmetical development. The unique-representation view considers the approximate number system (ANS) to represent the magnitude of both symbolic and non-symbolic numbers and ...
Nastasya Honoré, Marie-Pascale Noël
doaj +1 more source
Optimization of fuzzy linear fractional programming problem with fuzzy numbers [PDF]
Big Data and Computing Visions, 2021 In this paper, we consider a Fuzzy Linear Fractional Programming (FLFP) problem under the condition that the objective function and the values of the right-hand side are represented by symmetric trapezoidal fuzzy numbers while the left-hand side ...
Sapan Das
doaj +1 more source
Coherent States from Combinatorial Sequences [PDF]
, 2001 We construct coherent states using sequences of combinatorial numbers such as various binomial and trinomial numbers, and Bell and Catalan numbers. We show that these states satisfy the condition of the resolution of unity in a natural way.
Penson, Karol A., Solomon, Allan I
core +2 more sources
Multilevel Preconditioning of Discontinuous-Galerkin Spectral Element Methods, Part I: Geometrically Conforming Meshes [PDF]
, 2013 This paper is concerned with the design, analysis and implementation of preconditioning concepts for spectral Discontinuous Galerkin discretizations of elliptic boundary value problems.
C. Canuto +4 more
core +2 more sources
Condition numbers and their condition numbers
Linear Algebra and its Applications, 1995 In this interesting paper condition numbers are treated from the point of view of the unifying definition \[ \text{cond} (A) = \lim_{\varepsilon \to 0_ +} \sup_{\| \Delta A \| \leq \varepsilon \| A \|} {\bigl \| (A + \Delta A)^{-1} - A^{-1} \bigr \| \over \varepsilon \| A^{-1} \|}; \tag{1} \] similarly-defined condition numbers for linear systems are ...
openaire +2 more sources
On weak laws of large numbers for maximal partial sums of pairwise independent random variables
Comptes Rendus. Mathématique, 2023 This paper develops Rio’s method [11] to prove the weak law of large numbers for maximal partial sums of pairwise independent random variables. The method allows us to avoid using the Kolmogorov maximal inequality.
Thành, Lê Vǎn
doaj +1 more source
Condition numbers and scale free graphs
, 2006 In this work we study the condition number of the least square matrix corresponding to scale free networks. We compute a theoretical lower bound of the condition number which proves that they are ill conditioned.
Albert +18 more
core +2 more sources