|
This article is cited in 1 scientific paper (total in 1 paper)
Universal measurability of the identity mapping of a Banach space in certain topologies
V. I. Rybakov Tula State Pedagogical Institute
Abstract:
If $X$ is a Banach space and $X'$ is its conjugate, then a subset $Y$ of $X'$ is called madmissible for $X$ if a) he topology $\sigma(X,Y)$ is Hausdorff, b) the identity embedding of ($X,\sigma(X,Y)$) into $X$ is universally measurable (Ref. Zh. Mat., 1975, 8B 75 8K). If $X$ is separable, then the existence of an $m$-admissible set is well known. In this note it is shown that there exist nonseparable $X$ having separable $m$-admissible sets. The properties of spaces with separable $m$-admissible sets are considered. It is proved, in particular, that a separable normalizing subset $Y$ of $X'$ is $m$-admissible for $X$ if and only if every $\sigma(X,Y)$-compact set is separable in $X$.
Received: 09.05.1976
Citation:
V. I. Rybakov, “Universal measurability of the identity mapping of a Banach space in certain topologies”, Mat. Zametki, 23:2 (1978), 305–314; Math. Notes, 23:2 (1978), 164–168
Linking options:
https://www.mathnet.ru/eng/mzm8145 https://www.mathnet.ru/eng/mzm/v23/i2/p305
|
Statistics & downloads: |
Abstract page: | 187 | Full-text PDF : | 88 | First page: | 1 |
|