R-duals of certain sequences in Hilbert spaces were introduced by Casazza, Kutyniok and Lammers in 2004 and later generalized to Banach spaces by Xiao and Zhu. In this paper we provide some characterizations of R-dual sequences in Banach spaces.
机构:
Kharazmi Univ, Fac Math Sci & Comp Sci, 599 Taleghani Ave, Tehran 15618, IranKharazmi Univ, Fac Math Sci & Comp Sci, 599 Taleghani Ave, Tehran 15618, Iran