Lower semi continuous [closed]












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Let $psi:[0,infty) to [0, infty)$ be a map satisfying



(i) $psi$ is lower semicontinuous,



(ii) $psi$ is non-decreasing,



(iii) $psi(t)=0$ if and only if $t=0$.



If ${x_n}$ is a sequence in $(0, infty)$ then is it true that



$psi(liminflimits_{n to infty} x_n) leq liminflimits_{n to infty} psi(x_n)$ ?










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closed as off-topic by Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele Jan 5 at 13:02


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele

If this question can be reworded to fit the rules in the help center, please edit the question.


















    0












    $begingroup$


    Let $psi:[0,infty) to [0, infty)$ be a map satisfying



    (i) $psi$ is lower semicontinuous,



    (ii) $psi$ is non-decreasing,



    (iii) $psi(t)=0$ if and only if $t=0$.



    If ${x_n}$ is a sequence in $(0, infty)$ then is it true that



    $psi(liminflimits_{n to infty} x_n) leq liminflimits_{n to infty} psi(x_n)$ ?










    share|cite|improve this question









    $endgroup$



    closed as off-topic by Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele Jan 5 at 13:02


    This question appears to be off-topic. The users who voted to close gave this specific reason:


    • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele

    If this question can be reworded to fit the rules in the help center, please edit the question.
















      0












      0








      0





      $begingroup$


      Let $psi:[0,infty) to [0, infty)$ be a map satisfying



      (i) $psi$ is lower semicontinuous,



      (ii) $psi$ is non-decreasing,



      (iii) $psi(t)=0$ if and only if $t=0$.



      If ${x_n}$ is a sequence in $(0, infty)$ then is it true that



      $psi(liminflimits_{n to infty} x_n) leq liminflimits_{n to infty} psi(x_n)$ ?










      share|cite|improve this question









      $endgroup$




      Let $psi:[0,infty) to [0, infty)$ be a map satisfying



      (i) $psi$ is lower semicontinuous,



      (ii) $psi$ is non-decreasing,



      (iii) $psi(t)=0$ if and only if $t=0$.



      If ${x_n}$ is a sequence in $(0, infty)$ then is it true that



      $psi(liminflimits_{n to infty} x_n) leq liminflimits_{n to infty} psi(x_n)$ ?







      real-analysis






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Jan 5 at 5:58









      Manu RohillaManu Rohilla

      13619




      13619




      closed as off-topic by Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele Jan 5 at 13:02


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele

      If this question can be reworded to fit the rules in the help center, please edit the question.




      closed as off-topic by Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele Jan 5 at 13:02


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Antonios-Alexandros Robotis, RRL, Nosrati, Rhys Steele

      If this question can be reworded to fit the rules in the help center, please edit the question.






















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