Results 21 to 30 of about 912,182 (324)
Multiplicative Lidskii's inequalities and optimal perturbations of frames [PDF]
, 2014 In this paper we study two design problems in frame theory: on the one hand, given a fixed finite frame $\cF$ for $\hil\cong\C^d$ we compute those dual frames $\cG$ of $\cF$ that are optimal perturbations of the canonical dual frame for $\cF$ under ...
Massey, Pedro G. +2 more
core +5 more sources
Communications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 2010 Summary: Serret-Frenet and parallel-transport frame are produced with the help of reel quaternions again by \textit{A. J. Hanson} [Quaternion Frenet frames: making optimal tubes and ribbons from curves (1994)]. In this study, calculations mentioned above are applied to dual quaternions and the Serret-Frenet and parallel-transport frame are obtained by ...
ÖZTÜRK, Ufuk +3 more
openaire +5 more sources
Characterization and stability of approximately dual g-frames in Hilbert spaces
Journal of Inequalities and Applications, 2018 This paper addresses approximately dual g-frames. First, we establish a connection between approximately dual g-frames and dual g-frames and obtain a characterization of approximately dual g-frames.
Yan-Ling Fu, Wei Zhang
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$G$-dual Frames in Hilbert $C^{*}$-module Spaces [PDF]
Sahand Communications in Mathematical Analysis, 2018 In this paper, we introduce the concept of $g$-dual frames for Hilbert $C^{*}$-modules, and then the properties and stability results of $g$-dual frames are given.
Fatemeh Ghobadzadeh, Abbas Najati
doaj +1 more source
Optimization of force-limiting seismic devices connecting structural subsystems [PDF]
, 2016 This paper is focused on the optimum design of an original force-limiting floor anchorage system for the seismic protection of reinforced concrete (RC) dual wall-frame buildings.
Fleischman, Robert B. +4 more
core +1 more source
Nonstationary Gabor frames - approximately dual frames and reconstruction errors [PDF]
Advances in Computational Mathematics, 2014 20 pages, 6 ...
Matusiak, Ewa, Dörfler, Monika
openaire +4 more sources
Dilation-and-modulation systems on the half real line
Journal of Inequalities and Applications, 2016 Translation, dilation, and modulation are fundamental operations in wavelet analysis. Affine frames based on translation-and-dilation operation and Gabor frames based on translation-and-modulation operation have been extensively studied and seen great ...
Yun-Zhang Li, Wei Zhang
doaj +1 more source
Frames generated by double sequences in Hilbert spaces [PDF]
Mathematica Moravica, 2023 In this paper, we introduce frames generated by double sequences (d-frame) in Hilbert spaces and describe some of their properties. Furthermore, we discuss frame operators, alternate dual frames and stability for d-frames.
Biswas Narendra +2 more
doaj
Interacting spin-2 fields in three dimensions [PDF]
, 2015 Using the frame formulation of multi-gravity in three dimensions, we show that demanding the presence of secondary constraints which remove the Boulware-Deser ghosts restricts the possible interaction terms of the theory and identifies invertible frame ...
AF Goya +29 more
core +3 more sources
Frames of subspaces in Hilbert spaces with W-metrics
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015 In this paper we start considering a sesquilinear form 〈W·,·〉 defined over a Hilbert space (ℌ,〈·,·〉) where W is bounded (W* = W ∈ Ɓ(ℌ)) and ker W = {0}. We study the dynamic of frame of subspaces over the completion of (ℌ, 〈W·,·〉) which is denoted by ℌW ...
Acosta-Humánez Primitivo +2 more
doaj +1 more source