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math.FA2018
K-g-frames and approximate K-g-duals in Hilbert spaces
Jahangir Cheshmavar, Maryam Rezaei Sarkhaei
Approximate duality of frame pairs have been investigated by Christensen and Laugesen in (Sampl. Theory Signal Image Process., 9, 2011, 77-90), with the motivation to obtain an imp…
math.FA2018
Viewing *-multiplication operators between Orlics spaces
Jahangir Cheshmavar, Seyed Kamel Hosseini
In this paper, Lambert multipliers acting between Orlicz spaces are characterized based on conditional expectation operators. Also, we give necessary and sufficient conditions to *…