If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what could be the conditions for Q such that P...

How can I fix this gap between bookcases I made?

How long do I have to send payment?

What does "rabbited" mean/imply in this sentence?

Why is the maximum length of OpenWrt’s root password 8 characters?

If the Wish spell is used to duplicate the effect of Simulacrum, are existing duplicates destroyed?

What are my rights when I have a Sparpreis ticket but can't board an overcrowded train?

Realistic Alternatives to Dust: What Else Could Feed a Plankton Bloom?

What do hard-Brexiteers want with respect to the Irish border?

Springs with some finite mass

Does it makes sense to buy a new cycle to learn riding?

How are circuits which use complex ICs normally simulated?

Patience, young "Padovan"

Unbreakable Formation vs. Cry of the Carnarium

Dual Citizen. Exited the US on Italian passport recently

How to create dashed lines/arrows in Illustrator

How to answer pointed "are you quitting" questioning when I don't want them to suspect

What could be the right powersource for 15 seconds lifespan disposable giant chainsaw?

I see my dog run

Why don't Unix/Linux systems traverse through directories until they find the required version of a linked library?

Lethal sonic weapons

Limit the amount of RAM Mathematica may access?

It's possible to achieve negative score?

How come people say “Would of”?

What is the best strategy for white in this position?



If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what could be the conditions for Q such that P (x) = 0 => Q(x) = x?



The 2019 Stack Overflow Developer Survey Results Are InIf two polynomials are equal as functions, are they necessarily equal as polynomials?Prove that there are rational polynomials $p,q$ such that $p(x)(x^4+2x^2+1)+ q(x)(x^4-3x^2-4) = x^2+1$Two factored polynomials and a parameterShow that there existe two polynomials $q$ and $r$ in $K[x]$ such that $f=qg+r$Uniform convergeness and polynomialsAre two distinct irreducible monic polynomials are relatively prime?Are the polynomials of form $a_0 + a_1x + a_2x^2 +a_3x^3$, with $a_i$ rational, a subspace of $P_3$?Roots and divisibility for real polynomials of several variablesWhat are the characteristics that we can use to identify polynomials that have singular points?Let $f(x)$ and $g(x)$ are two complex polynomials such that $f^{-1}(c_{i})=g^{-1}(c_{i})$












-1












$begingroup$


If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what are the restrictions for Q such that the statement P (x) = 0 => Q(x) = x to be true (I was thinking the restriction has to be Q to be strictly monotone on Im(Q), but I’m not quite sure)?
If the left to right implication is true, furthermore, can someone please help me prove whether the inverse implication ( If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), then Q (x) = x => P (x) = 0 ) holds or is actually false?










share|cite|improve this question









$endgroup$

















    -1












    $begingroup$


    If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what are the restrictions for Q such that the statement P (x) = 0 => Q(x) = x to be true (I was thinking the restriction has to be Q to be strictly monotone on Im(Q), but I’m not quite sure)?
    If the left to right implication is true, furthermore, can someone please help me prove whether the inverse implication ( If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), then Q (x) = x => P (x) = 0 ) holds or is actually false?










    share|cite|improve this question









    $endgroup$















      -1












      -1








      -1


      1



      $begingroup$


      If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what are the restrictions for Q such that the statement P (x) = 0 => Q(x) = x to be true (I was thinking the restriction has to be Q to be strictly monotone on Im(Q), but I’m not quite sure)?
      If the left to right implication is true, furthermore, can someone please help me prove whether the inverse implication ( If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), then Q (x) = x => P (x) = 0 ) holds or is actually false?










      share|cite|improve this question









      $endgroup$




      If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), what are the restrictions for Q such that the statement P (x) = 0 => Q(x) = x to be true (I was thinking the restriction has to be Q to be strictly monotone on Im(Q), but I’m not quite sure)?
      If the left to right implication is true, furthermore, can someone please help me prove whether the inverse implication ( If P(x) and Q(x) are two polynomials such that P(x) | P(Q(x)), then Q (x) = x => P (x) = 0 ) holds or is actually false?







      abstract-algebra polynomials root-systems






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Mar 21 at 5:37









      Catalin CaldaruseCatalin Caldaruse

      61




      61






















          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
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3156389%2fif-px-and-qx-are-two-polynomials-such-that-px-pqx-what-could-be-the%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
















          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%2f3156389%2fif-px-and-qx-are-two-polynomials-such-that-px-pqx-what-could-be-the%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

          Nidaros erkebispedøme

          Birsay

          Where did Arya get these scars? Unicorn Meta Zoo #1: Why another podcast? Announcing the arrival of Valued Associate #679: Cesar Manara Favourite questions and answers from the 1st quarter of 2019Why did Arya refuse to end it?Has the pronunciation of Arya Stark's name changed?Has Arya forgiven people?Why did Arya Stark lose her vision?Why can Arya still use the faces?Has the Narrow Sea become narrower?Does Arya Stark know how to make poisons outside of the House of Black and White?Why did Nymeria leave Arya?Why did Arya not kill the Lannister soldiers she encountered in the Riverlands?What is the current canonical age of Sansa, Bran and Arya Stark?