Retro Banach frames for conjugate Banach spaces have been introduced and studied. It has been proved that a Banach space E is separable if and only if E* has a retro Banach frame. Finally, a necessary and sufficient condition for a sequence in a separable Banach space to be a retro Banach frame has been given.
Cite this article
P. K. Jain, Lalit K. Vashisht, S. K. Kaushik, Banach Frames for Conjugate Banach Spaces. Z. Anal. Anwend. 23 (2004), no. 4, pp. 713–720DOI 10.4171/ZAA/1217