On certain barrelled normed spaces

Manuel Valdivia

Annales de l'institut Fourier (1979)

  • Volume: 29, Issue: 3, page 39-56
  • ISSN: 0373-0956

Abstract

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Let 𝒜 be a σ -algebra on a set X . If A belongs to 𝒜 let e ( A ) be the characteristic function of A . Let 0 ( X , 𝒜 be the linear space generated by { e ( A ) : A 𝒜 } endowed with the topology of the uniform convergence. It is proved in this paper that if ( E n ) is an increasing sequence of subspaces of 0 ( X , 𝒜 ) covering it, there is a positive integer p such that E p is a dense barrelled subspace of 0 ( X , 𝒜 ) , and some new results in measure theory are deduced from this fact.

How to cite

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Valdivia, Manuel. "On certain barrelled normed spaces." Annales de l'institut Fourier 29.3 (1979): 39-56. <http://eudml.org/doc/74425>.

@article{Valdivia1979,
abstract = {Let $\{\cal A\}$ be a $\sigma $-algebra on a set $X$. If $A$ belongs to $\{\cal A\}$ let $e(A)$ be the characteristic function of $A$. Let $\ell ^\infty _0(X,\{\cal A\}$ be the linear space generated by $\lbrace e(A):A \in \{\cal A\}\rbrace $ endowed with the topology of the uniform convergence. It is proved in this paper that if $(E_n)$ is an increasing sequence of subspaces of $\ell ^\infty _0(X,\{\cal A\})$ covering it, there is a positive integer $p$ such that $E_p$ is a dense barrelled subspace of $\ell ^\infty _0(X,\{\cal A\})$, and some new results in measure theory are deduced from this fact.},
author = {Valdivia, Manuel},
journal = {Annales de l'institut Fourier},
language = {eng},
number = {3},
pages = {39-56},
publisher = {Association des Annales de l'Institut Fourier},
title = {On certain barrelled normed spaces},
url = {http://eudml.org/doc/74425},
volume = {29},
year = {1979},
}

TY - JOUR
AU - Valdivia, Manuel
TI - On certain barrelled normed spaces
JO - Annales de l'institut Fourier
PY - 1979
PB - Association des Annales de l'Institut Fourier
VL - 29
IS - 3
SP - 39
EP - 56
AB - Let ${\cal A}$ be a $\sigma $-algebra on a set $X$. If $A$ belongs to ${\cal A}$ let $e(A)$ be the characteristic function of $A$. Let $\ell ^\infty _0(X,{\cal A}$ be the linear space generated by $\lbrace e(A):A \in {\cal A}\rbrace $ endowed with the topology of the uniform convergence. It is proved in this paper that if $(E_n)$ is an increasing sequence of subspaces of $\ell ^\infty _0(X,{\cal A})$ covering it, there is a positive integer $p$ such that $E_p$ is a dense barrelled subspace of $\ell ^\infty _0(X,{\cal A})$, and some new results in measure theory are deduced from this fact.
LA - eng
UR - http://eudml.org/doc/74425
ER -

References

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  1. [1] G. BENNETT and N.J. KALTON, Addendum to “FK-spaces containing c0”, Duke Math. J., 39, (1972), 819-821. Zbl0254.46009MR47 #2312
  2. [2] R.B. DARST, On a theorem of Nikodym with applications to weak convergence and von Neumann algebra, Pacific Jour. of Math., V. 23, No 3, (1967), 473-477. Zbl0189.44901MR38 #6360
  3. [3] A. GROTHENDIECK, Espaces vectoriels topologiques, Departamento de Matemática da Universidade de Sao Paulo, Brasil, 1954. Zbl0058.33401MR17,1110a
  4. [4] I. LABUDA, Exhaustive measures in arbitrary topological vector spaces, Studia Math., LVIII, (1976), 241-248. Zbl0365.46037MR55 #8789
  5. [5] M. VALDIVIA, Sobre el teorema de la gráfica cerrada, Collectanea Math., XXII, Fasc. 1, (1971), 51-72. Zbl0223.46009
  6. [6] M. VALDIVIA, On weak compactness, Studia Math., XLIX, (1973), 35-40. Zbl0243.46003MR48 #11969

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