Results 41 to 50 of about 361,955 (117)
Localization of the spectra of dual frames multipliers
Constructive Mathematical Analysis, 2022 This paper concerns dual frames multipliers, i.e. operators in Hilbert spaces consisting of analysis, multiplication and synthesis processes, where the analysis and the synthesis are made by two dual frames, respectively. The goal of the paper is to give some results about the localization of the spectra of dual frames multipliers, i.e.
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Frame representations and Parseval duals with applications to Gabor frames [PDF]
Transactions of the American Mathematical Society, 2008 Let {x n } be a frame for a Hilbert space H. We investigate the conditions under which there exists a dual frame for {x n } which is also a Parseval (or tight) frame. We show that the existence of a Parseval dual is equivalent to the problem whether (x n ) can be dilated to an orthonormal basis (under an oblique projection).
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Compare and contrast between duals of fusion and discrete frames
, 2016 Fusion frames are valuable generalizations of discrete frames. Most concepts of fusion frames are shared by discrete frames. However, the dual setting is so complicated.
Arefijamaal, Ali Akbar, Osgooei, Elnaz
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RG Domain Walls and Hybrid Triangulations [PDF]
, 2013 This paper studies the interplay between the N=2 gauge theories in three and four dimensions that have a geometric description in terms of twisted compactification of the six-dimensional (2,0) SCFT.
Dimofte, Tudor +2 more
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Applied and Computational Harmonic Analysis, 1997 AbstractA characterization of multivariate dual wavelet tight frames for any general dilation matrix is presented in this paper. As an application, Lawton's result on wavelet tight frames inL2(R) is generalized to then-dimensional case. Two ways of constructing certain dual wavelet tight frames inL2(Rn) are suggested.
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On some properties of g-frames and g-coherent states
, 2010 After a short review of some basic facts on g-frames, we analyze in details the so-called (alternate) dual g-frames. We end the paper by introducing what we call {\em g-coherent states} and studying their properties.Comment: In press in Il Nuovo Cimento
Abdollahpour, Mohammad Reza +1 more
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DUALS OF A FRAME IN QUATERNIONIC HILBERT SPACES
Poincare Journal of Analysis and Applications, 2018 14 pages.
Soniya Sahu +2 more
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Duals of Some Constructed $*$-Frames by Equivalent $*$-Frames
Sahand Communications in Mathematical Analysis, 2019 Hilbert frames theory have been extended to frames in Hilbert $C^*$-modules. The paper introduces equivalent $*$-frames and presents ordinary duals of a constructed $*$-frame by an adjointable and invertible operator. Also, some necessary and sufficient conditions are studied such that $*$-frames and ordinary duals or operator duals of another ...
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INDIRECT SAMPLING in the CONTEXT of DUAL FRAME SURVEYS [PDF]
Under-coverage is one of the most common problems of sampling frames. To reduce the impact of coverage error on survey estimates several frames can be combined in order to achieve a complete (or nearly complete) coverage of the target population ...
Manuela Maia, Paula Vicente
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