Author:
Drewnowski Lech,Florencio Miguel,Paúl Pedro J.
Abstract
The research presented in this paper started by extending a theorem of Swetits [18]about barrelledness of subspaces of metrizable AK-spaces to general AK-spaces of scalar sequences. The extension reads as follows.(1) A subspace λ0 of a barrelled AK-space λ such that λ0 ⊃ φ is barrelled if and only if its dualis weak* sequentially complete. If in addition λ0 is monotone, then it is barrelled if and only ifequals the Köthe dualof λ0.As an easy consequence of this extension, we obtained the following result of Elstrodt and Roelcke [8, Corollary 3.4].(2) If λ is a barrelled monotone AK-space, then also its subspace ℒ(λ), consisting of all sequences in λ with zero-density support, is barrelled.
Publisher
Cambridge University Press (CUP)
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