Mobius Geometry identity
$begingroup$
How do you prove that all figures consisting of three distinct points are congruent in Mobius Geometry?
I understand it relates to the Fundamental Theorem of Mobius Geometry. The concepts of which are very hard for me to grasp.
geometry mobius-transformation
$endgroup$
add a comment |
$begingroup$
How do you prove that all figures consisting of three distinct points are congruent in Mobius Geometry?
I understand it relates to the Fundamental Theorem of Mobius Geometry. The concepts of which are very hard for me to grasp.
geometry mobius-transformation
$endgroup$
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55
add a comment |
$begingroup$
How do you prove that all figures consisting of three distinct points are congruent in Mobius Geometry?
I understand it relates to the Fundamental Theorem of Mobius Geometry. The concepts of which are very hard for me to grasp.
geometry mobius-transformation
$endgroup$
How do you prove that all figures consisting of three distinct points are congruent in Mobius Geometry?
I understand it relates to the Fundamental Theorem of Mobius Geometry. The concepts of which are very hard for me to grasp.
geometry mobius-transformation
geometry mobius-transformation
edited Jan 31 at 6:52


YuiTo Cheng
2,2634937
2,2634937
asked Jan 31 at 3:10
Melissa JohnsonMelissa Johnson
134
134
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55
add a comment |
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
I suppose there are many ways of looking at this, but here’s how I think of it: take your three distinct complex numbers, ${a,b,c}$. Then you can get a Möbius transformation mapping these to ${0,1,infty}$, namely
$$
zmapsto f(z)=frac{z-a}{z-c},,
$$
except of course that this sent $b$ to $lambda=frac{b-a}{b-c}$ instead of to $1$. Well: just change that $f$ to $frac1lambda f$. You still have $amapsto0$, $cmapstoinfty$, and now, besides, $bmapsto1$.
$endgroup$
add a comment |
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%2f3094453%2fmobius-geometry-identity%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
$begingroup$
I suppose there are many ways of looking at this, but here’s how I think of it: take your three distinct complex numbers, ${a,b,c}$. Then you can get a Möbius transformation mapping these to ${0,1,infty}$, namely
$$
zmapsto f(z)=frac{z-a}{z-c},,
$$
except of course that this sent $b$ to $lambda=frac{b-a}{b-c}$ instead of to $1$. Well: just change that $f$ to $frac1lambda f$. You still have $amapsto0$, $cmapstoinfty$, and now, besides, $bmapsto1$.
$endgroup$
add a comment |
$begingroup$
I suppose there are many ways of looking at this, but here’s how I think of it: take your three distinct complex numbers, ${a,b,c}$. Then you can get a Möbius transformation mapping these to ${0,1,infty}$, namely
$$
zmapsto f(z)=frac{z-a}{z-c},,
$$
except of course that this sent $b$ to $lambda=frac{b-a}{b-c}$ instead of to $1$. Well: just change that $f$ to $frac1lambda f$. You still have $amapsto0$, $cmapstoinfty$, and now, besides, $bmapsto1$.
$endgroup$
add a comment |
$begingroup$
I suppose there are many ways of looking at this, but here’s how I think of it: take your three distinct complex numbers, ${a,b,c}$. Then you can get a Möbius transformation mapping these to ${0,1,infty}$, namely
$$
zmapsto f(z)=frac{z-a}{z-c},,
$$
except of course that this sent $b$ to $lambda=frac{b-a}{b-c}$ instead of to $1$. Well: just change that $f$ to $frac1lambda f$. You still have $amapsto0$, $cmapstoinfty$, and now, besides, $bmapsto1$.
$endgroup$
I suppose there are many ways of looking at this, but here’s how I think of it: take your three distinct complex numbers, ${a,b,c}$. Then you can get a Möbius transformation mapping these to ${0,1,infty}$, namely
$$
zmapsto f(z)=frac{z-a}{z-c},,
$$
except of course that this sent $b$ to $lambda=frac{b-a}{b-c}$ instead of to $1$. Well: just change that $f$ to $frac1lambda f$. You still have $amapsto0$, $cmapstoinfty$, and now, besides, $bmapsto1$.
answered Jan 31 at 3:34
LubinLubin
45.5k44688
45.5k44688
add a comment |
add a comment |
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%2f3094453%2fmobius-geometry-identity%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
$begingroup$
For a (rather understandible) application to quantum computing, take a look to "symmetric entanglement classes for n qubits " by Martin Aulbach that you will find on ResearchGate
$endgroup$
– Jean Marie
Jan 31 at 21:55