Yu. Sharyn
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Antisymmetric Arens Regularity
Taras Vasylyshyn, Yurii Sharyn
MFAT 32 (2026), no. 2, 193-199
193-199
We introduce a concept of antisymmetric Arens regularity of Banach spaces and prove that a Banach space is Arens regular if and only if it is both symmetrically Arens regular and antisymmetrically Arens regular. We show that if a Banach space is nonreflexive, then it is not antisymmetrically Arens regular and provide an example of a symmetrically Arens regular Banach space which is not antisymmetrically Arens regular.