1-Extension of Sobolev functions over the real plane












0












$begingroup$


Let $Omega$ be the region ${(x,y) in mathbb{R}^2 | y >x^2}$. I would like to determine whether there exists a continuous extension map $$E:W^{1,p}(Omega) to W^{1,p}(mathbb{R}^2) .$$



Here we do not have the standard hypothesis to get such an extension like for example having $partialOmega$ compact,so I was trying to prove that it is false by invalidating some of the consequences this extension would imply, but I was not able to get any further










share|cite|improve this question









$endgroup$

















    0












    $begingroup$


    Let $Omega$ be the region ${(x,y) in mathbb{R}^2 | y >x^2}$. I would like to determine whether there exists a continuous extension map $$E:W^{1,p}(Omega) to W^{1,p}(mathbb{R}^2) .$$



    Here we do not have the standard hypothesis to get such an extension like for example having $partialOmega$ compact,so I was trying to prove that it is false by invalidating some of the consequences this extension would imply, but I was not able to get any further










    share|cite|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      Let $Omega$ be the region ${(x,y) in mathbb{R}^2 | y >x^2}$. I would like to determine whether there exists a continuous extension map $$E:W^{1,p}(Omega) to W^{1,p}(mathbb{R}^2) .$$



      Here we do not have the standard hypothesis to get such an extension like for example having $partialOmega$ compact,so I was trying to prove that it is false by invalidating some of the consequences this extension would imply, but I was not able to get any further










      share|cite|improve this question









      $endgroup$




      Let $Omega$ be the region ${(x,y) in mathbb{R}^2 | y >x^2}$. I would like to determine whether there exists a continuous extension map $$E:W^{1,p}(Omega) to W^{1,p}(mathbb{R}^2) .$$



      Here we do not have the standard hypothesis to get such an extension like for example having $partialOmega$ compact,so I was trying to prove that it is false by invalidating some of the consequences this extension would imply, but I was not able to get any further







      functional-analysis sobolev-spaces






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Dec 29 '18 at 13:02









      Tommaso ScognamiglioTommaso Scognamiglio

      507312




      507312






















          0






          active

          oldest

          votes











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "69"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3055823%2f1-extension-of-sobolev-functions-over-the-real-plane%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3055823%2f1-extension-of-sobolev-functions-over-the-real-plane%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Wiesbaden

          To store a contact into the json file from server.js file using a class in NodeJS

          Marschland