If f is uniformly continuous on S and has a continuous extension on $overline S$, $tilde f$, then $tilde f$...












0














Suppose $f : S to mathbb{R}$ is a uniformly continuous function. Then f has a continuous extension $tilde f : overline{S} to mathbb{R}$. Verify that $tilde f$ is continuous on $overline S$.



I am having trouble solving this problem, any hints would be greatly appreciated.










share|cite|improve this question


















  • 3




    Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
    – астон вілла олоф мэллбэрг
    Nov 28 at 4:48


















0














Suppose $f : S to mathbb{R}$ is a uniformly continuous function. Then f has a continuous extension $tilde f : overline{S} to mathbb{R}$. Verify that $tilde f$ is continuous on $overline S$.



I am having trouble solving this problem, any hints would be greatly appreciated.










share|cite|improve this question


















  • 3




    Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
    – астон вілла олоф мэллбэрг
    Nov 28 at 4:48
















0












0








0







Suppose $f : S to mathbb{R}$ is a uniformly continuous function. Then f has a continuous extension $tilde f : overline{S} to mathbb{R}$. Verify that $tilde f$ is continuous on $overline S$.



I am having trouble solving this problem, any hints would be greatly appreciated.










share|cite|improve this question













Suppose $f : S to mathbb{R}$ is a uniformly continuous function. Then f has a continuous extension $tilde f : overline{S} to mathbb{R}$. Verify that $tilde f$ is continuous on $overline S$.



I am having trouble solving this problem, any hints would be greatly appreciated.







real-analysis continuity






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Nov 28 at 4:45









Pika_2018

204




204








  • 3




    Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
    – астон вілла олоф мэллбэрг
    Nov 28 at 4:48
















  • 3




    Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
    – астон вілла олоф мэллбэрг
    Nov 28 at 4:48










3




3




Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
– астон вілла олоф мэллбэрг
Nov 28 at 4:48






Hint : how is $bar f$ defined on elements of $bar S setminus S$? Use the fact that a uniformly continuous function carries Cauchy sequences to Cauchy sequences.
– астон вілла олоф мэллбэрг
Nov 28 at 4:48

















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%2f3016727%2fif-f-is-uniformly-continuous-on-s-and-has-a-continuous-extension-on-overline-s%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown






























active

oldest

votes













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.





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%2f3016727%2fif-f-is-uniformly-continuous-on-s-and-has-a-continuous-extension-on-overline-s%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

Marschland

Dieringhausen