Can $Omega$ be replaced with any open set of $Bbb C$ in Theorem 5.2 and Theorem 5.3?












0














enter image description here



enter image description here



enter image description here



enter image description here



The above pictures are from Stein's "Complex Analysis".



In Theorem 5.2 and Theorem 5.3, $Omega$ is a region, I think it can be replaced with any open set of $Bbb C$, can't it?










share|cite|improve this question
























  • where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
    – mathworker21
    yesterday


















0














enter image description here



enter image description here



enter image description here



enter image description here



The above pictures are from Stein's "Complex Analysis".



In Theorem 5.2 and Theorem 5.3, $Omega$ is a region, I think it can be replaced with any open set of $Bbb C$, can't it?










share|cite|improve this question
























  • where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
    – mathworker21
    yesterday
















0












0








0







enter image description here



enter image description here



enter image description here



enter image description here



The above pictures are from Stein's "Complex Analysis".



In Theorem 5.2 and Theorem 5.3, $Omega$ is a region, I think it can be replaced with any open set of $Bbb C$, can't it?










share|cite|improve this question















enter image description here



enter image description here



enter image description here



enter image description here



The above pictures are from Stein's "Complex Analysis".



In Theorem 5.2 and Theorem 5.3, $Omega$ is a region, I think it can be replaced with any open set of $Bbb C$, can't it?







complex-analysis






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited yesterday

























asked yesterday









Born to be proud

782510




782510












  • where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
    – mathworker21
    yesterday




















  • where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
    – mathworker21
    yesterday


















where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
– mathworker21
yesterday






where does it say $Omega$ is a region? and what is a region? is it just a simply connected, open set?
– mathworker21
yesterday












1 Answer
1






active

oldest

votes


















2














Even if the theorems are stated for connected open sets you can apply them to connected components and conclude that they are valid for any open set $Omega$. The conclusions are 'local' results so connectedness is irrelevant. In fact the proofs themselves work for any open set $Omega$. Note that any compact subset of $Omega$ can be covered by a finite number of disks whose closures are contained in $Omega$.






share|cite|improve this answer





















    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%2f3052024%2fcan-omega-be-replaced-with-any-open-set-of-bbb-c-in-theorem-5-2-and-theore%23new-answer', 'question_page');
    }
    );

    Post as a guest















    Required, but never shown

























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2














    Even if the theorems are stated for connected open sets you can apply them to connected components and conclude that they are valid for any open set $Omega$. The conclusions are 'local' results so connectedness is irrelevant. In fact the proofs themselves work for any open set $Omega$. Note that any compact subset of $Omega$ can be covered by a finite number of disks whose closures are contained in $Omega$.






    share|cite|improve this answer


























      2














      Even if the theorems are stated for connected open sets you can apply them to connected components and conclude that they are valid for any open set $Omega$. The conclusions are 'local' results so connectedness is irrelevant. In fact the proofs themselves work for any open set $Omega$. Note that any compact subset of $Omega$ can be covered by a finite number of disks whose closures are contained in $Omega$.






      share|cite|improve this answer
























        2












        2








        2






        Even if the theorems are stated for connected open sets you can apply them to connected components and conclude that they are valid for any open set $Omega$. The conclusions are 'local' results so connectedness is irrelevant. In fact the proofs themselves work for any open set $Omega$. Note that any compact subset of $Omega$ can be covered by a finite number of disks whose closures are contained in $Omega$.






        share|cite|improve this answer












        Even if the theorems are stated for connected open sets you can apply them to connected components and conclude that they are valid for any open set $Omega$. The conclusions are 'local' results so connectedness is irrelevant. In fact the proofs themselves work for any open set $Omega$. Note that any compact subset of $Omega$ can be covered by a finite number of disks whose closures are contained in $Omega$.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered yesterday









        Kavi Rama Murthy

        49.2k31854




        49.2k31854






























            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.





            Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


            Please pay close attention to the following guidance:


            • 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.


            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%2f3052024%2fcan-omega-be-replaced-with-any-open-set-of-bbb-c-in-theorem-5-2-and-theore%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

            Human spaceflight

            Can not write log (Is /dev/pts mounted?) - openpty in Ubuntu-on-Windows?

            File:DeusFollowingSea.jpg