Under what condition on the space X, any Continuous operator will be Completely continuous.











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Categorise the spaces $X$ for which $B_{00}(X,X)=B(X,X)$, where
$B(X,X)$ is the set of bounded linear operators and $
B_{00}(X,X)$
the set of completely continuous operators, i.e. operators which take weak convergent sequences to strong convergence sequence.










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    Categorise the spaces $X$ for which $B_{00}(X,X)=B(X,X)$, where
    $B(X,X)$ is the set of bounded linear operators and $
    B_{00}(X,X)$
    the set of completely continuous operators, i.e. operators which take weak convergent sequences to strong convergence sequence.










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      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      Categorise the spaces $X$ for which $B_{00}(X,X)=B(X,X)$, where
      $B(X,X)$ is the set of bounded linear operators and $
      B_{00}(X,X)$
      the set of completely continuous operators, i.e. operators which take weak convergent sequences to strong convergence sequence.










      share|cite|improve this question















      Categorise the spaces $X$ for which $B_{00}(X,X)=B(X,X)$, where
      $B(X,X)$ is the set of bounded linear operators and $
      B_{00}(X,X)$
      the set of completely continuous operators, i.e. operators which take weak convergent sequences to strong convergence sequence.







      functional-analysis operator-theory weak-convergence strong-convergence






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      edited Nov 14 at 13:59









      Davide Giraudo

      123k16149253




      123k16149253










      asked Nov 5 at 18:11









      Ashis Pati

      184




      184






















          1 Answer
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          accepted










          This is equivalent to $X$ having the Schur property (i.e., each weakly convergent sequence converges strongly). A prominent non-finite-dimensional example is $X=l_1$.



          If $B(X)=B_{00}(X)$ then $operatorname{Id}in B_{00}(X)$ and $X$ has the Schur property.



          Let $X$ have the Schur property then $B(X)=B_{00}(X)$ trivially.






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          • Does there exist any other space having Schur Property?
            – Ashis Pati
            2 days ago










          • This is a good question, I have no idea.
            – daw
            2 days ago











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          4
          down vote



          accepted










          This is equivalent to $X$ having the Schur property (i.e., each weakly convergent sequence converges strongly). A prominent non-finite-dimensional example is $X=l_1$.



          If $B(X)=B_{00}(X)$ then $operatorname{Id}in B_{00}(X)$ and $X$ has the Schur property.



          Let $X$ have the Schur property then $B(X)=B_{00}(X)$ trivially.






          share|cite|improve this answer























          • Does there exist any other space having Schur Property?
            – Ashis Pati
            2 days ago










          • This is a good question, I have no idea.
            – daw
            2 days ago















          up vote
          4
          down vote



          accepted










          This is equivalent to $X$ having the Schur property (i.e., each weakly convergent sequence converges strongly). A prominent non-finite-dimensional example is $X=l_1$.



          If $B(X)=B_{00}(X)$ then $operatorname{Id}in B_{00}(X)$ and $X$ has the Schur property.



          Let $X$ have the Schur property then $B(X)=B_{00}(X)$ trivially.






          share|cite|improve this answer























          • Does there exist any other space having Schur Property?
            – Ashis Pati
            2 days ago










          • This is a good question, I have no idea.
            – daw
            2 days ago













          up vote
          4
          down vote



          accepted







          up vote
          4
          down vote



          accepted






          This is equivalent to $X$ having the Schur property (i.e., each weakly convergent sequence converges strongly). A prominent non-finite-dimensional example is $X=l_1$.



          If $B(X)=B_{00}(X)$ then $operatorname{Id}in B_{00}(X)$ and $X$ has the Schur property.



          Let $X$ have the Schur property then $B(X)=B_{00}(X)$ trivially.






          share|cite|improve this answer














          This is equivalent to $X$ having the Schur property (i.e., each weakly convergent sequence converges strongly). A prominent non-finite-dimensional example is $X=l_1$.



          If $B(X)=B_{00}(X)$ then $operatorname{Id}in B_{00}(X)$ and $X$ has the Schur property.



          Let $X$ have the Schur property then $B(X)=B_{00}(X)$ trivially.







          share|cite|improve this answer














          share|cite|improve this answer



          share|cite|improve this answer








          edited Nov 14 at 14:00









          Davide Giraudo

          123k16149253




          123k16149253










          answered Nov 6 at 8:41









          daw

          23.8k1544




          23.8k1544












          • Does there exist any other space having Schur Property?
            – Ashis Pati
            2 days ago










          • This is a good question, I have no idea.
            – daw
            2 days ago


















          • Does there exist any other space having Schur Property?
            – Ashis Pati
            2 days ago










          • This is a good question, I have no idea.
            – daw
            2 days ago
















          Does there exist any other space having Schur Property?
          – Ashis Pati
          2 days ago




          Does there exist any other space having Schur Property?
          – Ashis Pati
          2 days ago












          This is a good question, I have no idea.
          – daw
          2 days ago




          This is a good question, I have no idea.
          – daw
          2 days ago


















           

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