Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleON THE EIGHTEENTH QUESTION OF ALLEN SHIELDS.AuthorsYOUSEFI, B.AbstractWe give sufficient conditions for reflexivity of the multiplication operator by the independent variable z, Mz acting on Banach spaces of formal Laurent series. This work presents sufficient conditions to a problem considered by A. L. Shields.SubjectsLAURENT series; COMPLEX variables; MULTIPLICATION; ARITHMETIC; BANACH spaces; MATHEMATICSPublicationInternational Journal of Mathematics, 2005, Vol 16, Issue 1, p37ISSN0129-167XPublication typeArticleDOI10.1142/S0129167X05002758