Abstract
Gǎvruta introduced K-frames for Hilbert spaces to study atomic systems with respect to a bounded linear operator. There are many differences between K-frames and standard frames, so we study weaving properties of K-frames. Two frames \(\{\phi _{i}\}_{i \in I}\) and \(\{\psi _{i}\}_{i \in I}\) for a separable Hilbert space \(\mathcal {H}\) are woven if there are positive constants \(A \le B\) such that for every subset \(\sigma \subset I\), the family \(\{\phi _{i}\}_{i \in \sigma } \cup \{\psi _{i}\}_{i \in \sigma ^{c}}\) is a frame for \(\mathcal {H}\) with frame bounds A, B. In this paper, we present necessary and sufficient conditions for weaving K-frames in Hilbert spaces. It is shown that woven K-frames and weakly woven K-frames are equivalent. Finally, sufficient conditions for Paley–Wiener type perturbation of weaving K-frames are given.
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The research of Deepshikha is supported by the Council of Scientific & Industrial Research (CSIR) (Grant No.: 09/045(1352)/2014- EMR-I), India. Lalit was supported by R & D Doctoral Research Programme, University of Delhi (Grant No.: RC/2015/9677).
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Deepshikha, Vashisht, L.K. Weaving K-Frames in Hilbert Spaces. Results Math 73, 81 (2018). https://doi.org/10.1007/s00025-018-0843-4
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DOI: https://doi.org/10.1007/s00025-018-0843-4