Prove that the derivative of the Cantor Function is zero almost everywhere.
$begingroup$
Construct a continuous increasing function $f:[0,1] to [0,1]$ such that $f(0) = 0$, $f(1)=1$ and $f'(x) = 0$ in a open dense set.
The Cantor Function works. I know that the derivative of Cantor Function is zero almost everywhere, but I cannot prove it. Can someone help me?
real-analysis metric-spaces
$endgroup$
add a comment |
$begingroup$
Construct a continuous increasing function $f:[0,1] to [0,1]$ such that $f(0) = 0$, $f(1)=1$ and $f'(x) = 0$ in a open dense set.
The Cantor Function works. I know that the derivative of Cantor Function is zero almost everywhere, but I cannot prove it. Can someone help me?
real-analysis metric-spaces
$endgroup$
6
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34
add a comment |
$begingroup$
Construct a continuous increasing function $f:[0,1] to [0,1]$ such that $f(0) = 0$, $f(1)=1$ and $f'(x) = 0$ in a open dense set.
The Cantor Function works. I know that the derivative of Cantor Function is zero almost everywhere, but I cannot prove it. Can someone help me?
real-analysis metric-spaces
$endgroup$
Construct a continuous increasing function $f:[0,1] to [0,1]$ such that $f(0) = 0$, $f(1)=1$ and $f'(x) = 0$ in a open dense set.
The Cantor Function works. I know that the derivative of Cantor Function is zero almost everywhere, but I cannot prove it. Can someone help me?
real-analysis metric-spaces
real-analysis metric-spaces
asked Jan 3 at 20:31
Lucas CorrêaLucas Corrêa
1,5581421
1,5581421
6
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34
add a comment |
6
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34
6
6
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34
add a comment |
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
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3060969%2fprove-that-the-derivative-of-the-cantor-function-is-zero-almost-everywhere%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
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.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3060969%2fprove-that-the-derivative-of-the-cantor-function-is-zero-almost-everywhere%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
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
6
$begingroup$
Check that the Cantor function is constant on each connected component of the complement of the Cantor set. This should be essentially immediate by construction.
$endgroup$
– Andrés E. Caicedo
Jan 3 at 20:34