Projection formula for proper maps of manifolds











up vote
2
down vote

favorite
1












Let $X,Y$ be (not necessarily compact) orientable manifolds without boundaries of dimension $m$ and $n$. Let $f : X rightarrow Y$ be a proper map. Assume that all the cohomologies have coefficients in $mathbb{Q}$. We could define the following pullback maps



$$f^* : H^*(Y) rightarrow H^*(X), f^*_c : H^*_c(Y) rightarrow H^*_c(X)$$



We also have the following maps defined by their poincare duals



$$ f_{!,c} : H^*_c(X) rightarrow H^{*+(n-m)}_c(Y), f_! : H^*(X) rightarrow H^{*+(n-m)}(Y) $$



I am interested in knowing the projection formulas that are available in this setup. A little bit of googling up gives the following link



https://mathoverflow.net/questions/67228/where-do-all-these-projection-formulas-come-from



and



https://mathoverflow.net/questions/18799/ubiquity-of-the-push-pull-formula



which seems useful but they are not the kind of equality I am interested in. I am wondering if the following is true for $alpha in H^*_c(Y), beta in H^*(X)$.



$$f_!(f^*_c(alpha) cup beta) = alpha cup f_!(beta)$$



Q1. Are there other kinds of projection formulas available?



Q2. Which of them are poincare dual or related to the others?



It would be extremely helpful if the answers contain references if not the proofs themselves. I am not sure if the notations I have used are the correct ones. Please feel free to edit accordingly.



Thanks!










share|cite|improve this question




























    up vote
    2
    down vote

    favorite
    1












    Let $X,Y$ be (not necessarily compact) orientable manifolds without boundaries of dimension $m$ and $n$. Let $f : X rightarrow Y$ be a proper map. Assume that all the cohomologies have coefficients in $mathbb{Q}$. We could define the following pullback maps



    $$f^* : H^*(Y) rightarrow H^*(X), f^*_c : H^*_c(Y) rightarrow H^*_c(X)$$



    We also have the following maps defined by their poincare duals



    $$ f_{!,c} : H^*_c(X) rightarrow H^{*+(n-m)}_c(Y), f_! : H^*(X) rightarrow H^{*+(n-m)}(Y) $$



    I am interested in knowing the projection formulas that are available in this setup. A little bit of googling up gives the following link



    https://mathoverflow.net/questions/67228/where-do-all-these-projection-formulas-come-from



    and



    https://mathoverflow.net/questions/18799/ubiquity-of-the-push-pull-formula



    which seems useful but they are not the kind of equality I am interested in. I am wondering if the following is true for $alpha in H^*_c(Y), beta in H^*(X)$.



    $$f_!(f^*_c(alpha) cup beta) = alpha cup f_!(beta)$$



    Q1. Are there other kinds of projection formulas available?



    Q2. Which of them are poincare dual or related to the others?



    It would be extremely helpful if the answers contain references if not the proofs themselves. I am not sure if the notations I have used are the correct ones. Please feel free to edit accordingly.



    Thanks!










    share|cite|improve this question


























      up vote
      2
      down vote

      favorite
      1









      up vote
      2
      down vote

      favorite
      1






      1





      Let $X,Y$ be (not necessarily compact) orientable manifolds without boundaries of dimension $m$ and $n$. Let $f : X rightarrow Y$ be a proper map. Assume that all the cohomologies have coefficients in $mathbb{Q}$. We could define the following pullback maps



      $$f^* : H^*(Y) rightarrow H^*(X), f^*_c : H^*_c(Y) rightarrow H^*_c(X)$$



      We also have the following maps defined by their poincare duals



      $$ f_{!,c} : H^*_c(X) rightarrow H^{*+(n-m)}_c(Y), f_! : H^*(X) rightarrow H^{*+(n-m)}(Y) $$



      I am interested in knowing the projection formulas that are available in this setup. A little bit of googling up gives the following link



      https://mathoverflow.net/questions/67228/where-do-all-these-projection-formulas-come-from



      and



      https://mathoverflow.net/questions/18799/ubiquity-of-the-push-pull-formula



      which seems useful but they are not the kind of equality I am interested in. I am wondering if the following is true for $alpha in H^*_c(Y), beta in H^*(X)$.



      $$f_!(f^*_c(alpha) cup beta) = alpha cup f_!(beta)$$



      Q1. Are there other kinds of projection formulas available?



      Q2. Which of them are poincare dual or related to the others?



      It would be extremely helpful if the answers contain references if not the proofs themselves. I am not sure if the notations I have used are the correct ones. Please feel free to edit accordingly.



      Thanks!










      share|cite|improve this question















      Let $X,Y$ be (not necessarily compact) orientable manifolds without boundaries of dimension $m$ and $n$. Let $f : X rightarrow Y$ be a proper map. Assume that all the cohomologies have coefficients in $mathbb{Q}$. We could define the following pullback maps



      $$f^* : H^*(Y) rightarrow H^*(X), f^*_c : H^*_c(Y) rightarrow H^*_c(X)$$



      We also have the following maps defined by their poincare duals



      $$ f_{!,c} : H^*_c(X) rightarrow H^{*+(n-m)}_c(Y), f_! : H^*(X) rightarrow H^{*+(n-m)}(Y) $$



      I am interested in knowing the projection formulas that are available in this setup. A little bit of googling up gives the following link



      https://mathoverflow.net/questions/67228/where-do-all-these-projection-formulas-come-from



      and



      https://mathoverflow.net/questions/18799/ubiquity-of-the-push-pull-formula



      which seems useful but they are not the kind of equality I am interested in. I am wondering if the following is true for $alpha in H^*_c(Y), beta in H^*(X)$.



      $$f_!(f^*_c(alpha) cup beta) = alpha cup f_!(beta)$$



      Q1. Are there other kinds of projection formulas available?



      Q2. Which of them are poincare dual or related to the others?



      It would be extremely helpful if the answers contain references if not the proofs themselves. I am not sure if the notations I have used are the correct ones. Please feel free to edit accordingly.



      Thanks!







      general-topology algebraic-topology duality-theorems poincare-duality






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited 2 days ago

























      asked Nov 12 at 17:30









      random123

      951719




      951719



























          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',
          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%2f2995588%2fprojection-formula-for-proper-maps-of-manifolds%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



















































           


          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f2995588%2fprojection-formula-for-proper-maps-of-manifolds%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

          How to change which sound is reproduced for terminal bell?

          Title Spacing in Bjornstrup Chapter, Removing Chapter Number From Contents

          Can I use Tabulator js library in my java Spring + Thymeleaf project?