What are the accumulation points of ( $pi,2pi$ ] $subsetmathbb{R}$?












0












$begingroup$


I was just curious as to what the accumulation points of ( $pi,2pi$ ] $subsetmathbb{R}$ are. I had gotten $pi,2pi$,1. But the other answers are 3 and 5.










share|cite|improve this question









$endgroup$












  • $begingroup$
    can you include some workings how do you obtain those partial results?
    $endgroup$
    – Siong Thye Goh
    Nov 26 '18 at 3:05
















0












$begingroup$


I was just curious as to what the accumulation points of ( $pi,2pi$ ] $subsetmathbb{R}$ are. I had gotten $pi,2pi$,1. But the other answers are 3 and 5.










share|cite|improve this question









$endgroup$












  • $begingroup$
    can you include some workings how do you obtain those partial results?
    $endgroup$
    – Siong Thye Goh
    Nov 26 '18 at 3:05














0












0








0





$begingroup$


I was just curious as to what the accumulation points of ( $pi,2pi$ ] $subsetmathbb{R}$ are. I had gotten $pi,2pi$,1. But the other answers are 3 and 5.










share|cite|improve this question









$endgroup$




I was just curious as to what the accumulation points of ( $pi,2pi$ ] $subsetmathbb{R}$ are. I had gotten $pi,2pi$,1. But the other answers are 3 and 5.







real-analysis






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Nov 26 '18 at 2:57









Karl TeschKarl Tesch

1




1












  • $begingroup$
    can you include some workings how do you obtain those partial results?
    $endgroup$
    – Siong Thye Goh
    Nov 26 '18 at 3:05


















  • $begingroup$
    can you include some workings how do you obtain those partial results?
    $endgroup$
    – Siong Thye Goh
    Nov 26 '18 at 3:05
















$begingroup$
can you include some workings how do you obtain those partial results?
$endgroup$
– Siong Thye Goh
Nov 26 '18 at 3:05




$begingroup$
can you include some workings how do you obtain those partial results?
$endgroup$
– Siong Thye Goh
Nov 26 '18 at 3:05










1 Answer
1






active

oldest

votes


















1












$begingroup$

Every point in $[pi, 2 pi]$ is an accumulation point of $(pi, 2pi]$ since any neighbourhood of any point of in $[pi, 2 pi]$ contains a point of $(pi, 2pi]$.






share|cite|improve this answer









$endgroup$













    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%2f3013758%2fwhat-are-the-accumulation-points-of-pi-2-pi-subset-mathbbr%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









    1












    $begingroup$

    Every point in $[pi, 2 pi]$ is an accumulation point of $(pi, 2pi]$ since any neighbourhood of any point of in $[pi, 2 pi]$ contains a point of $(pi, 2pi]$.






    share|cite|improve this answer









    $endgroup$


















      1












      $begingroup$

      Every point in $[pi, 2 pi]$ is an accumulation point of $(pi, 2pi]$ since any neighbourhood of any point of in $[pi, 2 pi]$ contains a point of $(pi, 2pi]$.






      share|cite|improve this answer









      $endgroup$
















        1












        1








        1





        $begingroup$

        Every point in $[pi, 2 pi]$ is an accumulation point of $(pi, 2pi]$ since any neighbourhood of any point of in $[pi, 2 pi]$ contains a point of $(pi, 2pi]$.






        share|cite|improve this answer









        $endgroup$



        Every point in $[pi, 2 pi]$ is an accumulation point of $(pi, 2pi]$ since any neighbourhood of any point of in $[pi, 2 pi]$ contains a point of $(pi, 2pi]$.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Nov 26 '18 at 3:07









        SheafsSheafs

        1517




        1517






























            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%2f3013758%2fwhat-are-the-accumulation-points-of-pi-2-pi-subset-mathbbr%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

            How to change which sound is reproduced for terminal bell?

            Can I use Tabulator js library in my java Spring + Thymeleaf project?

            Title Spacing in Bjornstrup Chapter, Removing Chapter Number From Contents