On some dual frames multipliers with at most countable spectra
نویسندگان
چکیده
A dual frames multiplier is an operator consisting of analysis, multiplication and synthesis processes, where the analysis are made by two in a Hilbert space, respectively. In this paper we investigate spectra some multipliers giving, particular, conditions to be at most countable. The contribution extends results available literature about Bessel with symbol decaying zero Riesz bases.
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ژورنال
عنوان ژورنال: Annali di Matematica Pura ed Applicata
سال: 2021
ISSN: ['1618-1891', '0373-3114']
DOI: https://doi.org/10.1007/s10231-021-01176-5