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Michael's selection theorem


reverse-reverse of Michael selection theoremLeray-Schauder fixed point theoremSegment ordered density conjecture.Clarification on the difference between Brouwer Fixed Point Theorem and Schauder Fixed point theoremCorollary of Tietze extension theoremWeak * lower semicontinuityHahn-Banach theorem geometric form complex caseHow to prove Hahn-Banach separation theorem for $X^*times mathbbR$ version?Strong separation theorem in dual spaceHow close is Mazur's Separation Theorem and the 2nd geometric form of HBT?













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$begingroup$


Michael's selection theorem states that a lower hemicontinuous multivalued map with nonempty convex closed values $displaystyle Fcolon Xrightrightarrows E$ from a paracompact space $X$ to a Banach space $E$ admits a continuous selection.



If we replace the assumption "lower hemicontinuous multivalued map with nonempty convex closed values" by one of the following assumptions, does the theorem still hold?



  1. "hemicontinuous multivalued map with nonempty closed values".

  2. "lower hemicontinuous multivalued map with nonempty connected closed values".









share|cite|improve this question









$endgroup$
















    1












    $begingroup$


    Michael's selection theorem states that a lower hemicontinuous multivalued map with nonempty convex closed values $displaystyle Fcolon Xrightrightarrows E$ from a paracompact space $X$ to a Banach space $E$ admits a continuous selection.



    If we replace the assumption "lower hemicontinuous multivalued map with nonempty convex closed values" by one of the following assumptions, does the theorem still hold?



    1. "hemicontinuous multivalued map with nonempty closed values".

    2. "lower hemicontinuous multivalued map with nonempty connected closed values".









    share|cite|improve this question









    $endgroup$














      1












      1








      1





      $begingroup$


      Michael's selection theorem states that a lower hemicontinuous multivalued map with nonempty convex closed values $displaystyle Fcolon Xrightrightarrows E$ from a paracompact space $X$ to a Banach space $E$ admits a continuous selection.



      If we replace the assumption "lower hemicontinuous multivalued map with nonempty convex closed values" by one of the following assumptions, does the theorem still hold?



      1. "hemicontinuous multivalued map with nonempty closed values".

      2. "lower hemicontinuous multivalued map with nonempty connected closed values".









      share|cite|improve this question









      $endgroup$




      Michael's selection theorem states that a lower hemicontinuous multivalued map with nonempty convex closed values $displaystyle Fcolon Xrightrightarrows E$ from a paracompact space $X$ to a Banach space $E$ admits a continuous selection.



      If we replace the assumption "lower hemicontinuous multivalued map with nonempty convex closed values" by one of the following assumptions, does the theorem still hold?



      1. "hemicontinuous multivalued map with nonempty closed values".

      2. "lower hemicontinuous multivalued map with nonempty connected closed values".






      general-topology functional-analysis multivalued-functions






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Mar 22 at 9:26









      DinoDino

      1216




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