Series That Converge on Sets of Null Density

نویسندگان

  • R. ESTRADA
  • R. P. KANWAL
چکیده

It is shown that a series of positive terms that converges on all sets of null density should be convergent. Using this result we construct examples of complete topological vector spaces that are proper subspaces of a Banach space, but whose dual spaces coincide with the dual space of the Banach space.

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تاریخ انتشار 1986