Why Bousfield localization preserves homotopy pull-backs?

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Studying chromatic homotopy theory I encountered the chromatic fracture square
$requireAMScd$
beginCD
L_K(n) vee K(m)X @>>> L_K(m)X\
@V V V @VV V\
L_K(n)X @>>> L_K(n)L_K(m)X
endCD
for $n<m$. Then I was told that applying a Bousfield localization functor we preserve the homotopy pull-back, this is useful since applying $L_K(t)$ for $n <t<m$ we get the equality $L_K(t)L_K(n)vee K(m)X= L_K(t)L_K(m)X $
since the lower terms become zero.



I would like to know a proof of this claim. Also a reference for this fact is well accepted.
Thank you for any help.







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    Studying chromatic homotopy theory I encountered the chromatic fracture square
    $requireAMScd$
    beginCD
    L_K(n) vee K(m)X @>>> L_K(m)X\
    @V V V @VV V\
    L_K(n)X @>>> L_K(n)L_K(m)X
    endCD
    for $n<m$. Then I was told that applying a Bousfield localization functor we preserve the homotopy pull-back, this is useful since applying $L_K(t)$ for $n <t<m$ we get the equality $L_K(t)L_K(n)vee K(m)X= L_K(t)L_K(m)X $
    since the lower terms become zero.



    I would like to know a proof of this claim. Also a reference for this fact is well accepted.
    Thank you for any help.







    share|cite|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Studying chromatic homotopy theory I encountered the chromatic fracture square
      $requireAMScd$
      beginCD
      L_K(n) vee K(m)X @>>> L_K(m)X\
      @V V V @VV V\
      L_K(n)X @>>> L_K(n)L_K(m)X
      endCD
      for $n<m$. Then I was told that applying a Bousfield localization functor we preserve the homotopy pull-back, this is useful since applying $L_K(t)$ for $n <t<m$ we get the equality $L_K(t)L_K(n)vee K(m)X= L_K(t)L_K(m)X $
      since the lower terms become zero.



      I would like to know a proof of this claim. Also a reference for this fact is well accepted.
      Thank you for any help.







      share|cite|improve this question













      Studying chromatic homotopy theory I encountered the chromatic fracture square
      $requireAMScd$
      beginCD
      L_K(n) vee K(m)X @>>> L_K(m)X\
      @V V V @VV V\
      L_K(n)X @>>> L_K(n)L_K(m)X
      endCD
      for $n<m$. Then I was told that applying a Bousfield localization functor we preserve the homotopy pull-back, this is useful since applying $L_K(t)$ for $n <t<m$ we get the equality $L_K(t)L_K(n)vee K(m)X= L_K(t)L_K(m)X $
      since the lower terms become zero.



      I would like to know a proof of this claim. Also a reference for this fact is well accepted.
      Thank you for any help.









      share|cite|improve this question












      share|cite|improve this question




      share|cite|improve this question








      edited Jul 20 at 8:07
























      asked Jul 18 at 17:13









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          I just need to observe that the Bousfield localization, being a left adjoint, preserves homotopy colimits. Now by stability of the stable homotopy category homotopy pull-backs and pushouts coincide.






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            up vote
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            I just need to observe that the Bousfield localization, being a left adjoint, preserves homotopy colimits. Now by stability of the stable homotopy category homotopy pull-backs and pushouts coincide.






            share|cite|improve this answer

























              up vote
              0
              down vote













              I just need to observe that the Bousfield localization, being a left adjoint, preserves homotopy colimits. Now by stability of the stable homotopy category homotopy pull-backs and pushouts coincide.






              share|cite|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                I just need to observe that the Bousfield localization, being a left adjoint, preserves homotopy colimits. Now by stability of the stable homotopy category homotopy pull-backs and pushouts coincide.






                share|cite|improve this answer













                I just need to observe that the Bousfield localization, being a left adjoint, preserves homotopy colimits. Now by stability of the stable homotopy category homotopy pull-backs and pushouts coincide.







                share|cite|improve this answer













                share|cite|improve this answer



                share|cite|improve this answer











                answered Jul 20 at 12:46









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