Prove that K is not equal to IJ
Im not sure how to prove this. Maybe i can show that IJ is bigger than K, and show a counter example where something is in IJ but not in K? but not sure how to do this either.
abstract-algebra polynomials ideals
add a comment |
Im not sure how to prove this. Maybe i can show that IJ is bigger than K, and show a counter example where something is in IJ but not in K? but not sure how to do this either.
abstract-algebra polynomials ideals
add a comment |
Im not sure how to prove this. Maybe i can show that IJ is bigger than K, and show a counter example where something is in IJ but not in K? but not sure how to do this either.
abstract-algebra polynomials ideals
Im not sure how to prove this. Maybe i can show that IJ is bigger than K, and show a counter example where something is in IJ but not in K? but not sure how to do this either.
abstract-algebra polynomials ideals
abstract-algebra polynomials ideals
asked Nov 19 at 0:52
H.B
203
203
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Hint:
For example, $;p(x)=4x^2+2xin IJ;$ , yet $;p(x)notin K;$ . Try to prove this.
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
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%2f3004363%2fprove-that-k-is-not-equal-to-ij%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
Hint:
For example, $;p(x)=4x^2+2xin IJ;$ , yet $;p(x)notin K;$ . Try to prove this.
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
add a comment |
Hint:
For example, $;p(x)=4x^2+2xin IJ;$ , yet $;p(x)notin K;$ . Try to prove this.
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
add a comment |
Hint:
For example, $;p(x)=4x^2+2xin IJ;$ , yet $;p(x)notin K;$ . Try to prove this.
Hint:
For example, $;p(x)=4x^2+2xin IJ;$ , yet $;p(x)notin K;$ . Try to prove this.
answered Nov 19 at 0:57
DonAntonio
177k1491225
177k1491225
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
add a comment |
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
But aren't the polynomials in I zero?
– H.B
Nov 19 at 1:06
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
@H.B What? The polynomials in $;I;$ are all those polynomials that vanish at zero, not only the zero polynomial...
– DonAntonio
Nov 19 at 1:07
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.
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.
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%2f3004363%2fprove-that-k-is-not-equal-to-ij%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