Frames generated by double sequences in Hilbert spaces
Mathematica Moravica, Tome 27 (2023) no. 1.

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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.
Mots-clés : Frame, Double sequence, d-frame, Alternate dual d-frame, Frame operator. 
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Narendra Biswas; Chetna Mehra; Mahesh C. Joshi. Frames generated by double sequences in Hilbert spaces. Mathematica Moravica, Tome 27 (2023) no. 1. https://geodesic-test.mathdoc.fr/item/MM3_2023_27_1_a4/