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Rigidity of the topological dual of spaces of formal series with respect to product topologies
Topological fields topological duals product topology infinite matrices
2011/2/22
Even in spaces of formal power series is required a topology in order to legitimate some operations, in particular to compute infinite summations. Many topologies can be exploited for different purpos...
Topologies on groups determined by sequences: Answers to several questions of I.Protasov and E.Zelenyuk
Topologies Protasov and E.Zelenyuk
2010/11/23
We answer several questions of I.Protasov and E.Zelenyuk concerning topologies on groups determined by T-sequences. A special attention is paid to studying the operation of supremum of two group topol...