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Redefining symbol midway through a document



The Next CEO of Stack OverflowConflict between color, graphicx and libertineWish to design new integral symbol with infinity symbol through itTeXLive/PDFTeX fonts loading problemConverting all numbers in document to set number of decimal placesGenerating PDF/A-1b compliant documents using pdfx and pdfLaTeXUndefined control sequence Hy@MakeCurrentHrefAuto when using tex4htRedefining math symbols like eta (with ensuremath)Redefining command outside math modebar through letter in mathmodeAdd an iterative layer to IfFileExists to check each graphicspath










2















I am trying to have one command (phi) draw two different symbols (varphi and regular phi) in the same document.



I have tried this with the below:



documentclassarticle
usepackageamsmath, amssymb

newcommandoldphiphi
renewcommandphivarphi

begindocument
$phi$
renewcommandphioldphi
$phi$
enddocument


But this wont compile (with pdftex or TexMaker), it seem like it gets stuck in a loop and wont create a pdf, but I can't see why?



Or is there a better way to achieve this?










share|improve this question
























  • Yes: using phi` when you want it, and `varphi`` when it is the one you need.

    – Bernard
    5 hours ago











  • @Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

    – Sergestus
    5 hours ago















2















I am trying to have one command (phi) draw two different symbols (varphi and regular phi) in the same document.



I have tried this with the below:



documentclassarticle
usepackageamsmath, amssymb

newcommandoldphiphi
renewcommandphivarphi

begindocument
$phi$
renewcommandphioldphi
$phi$
enddocument


But this wont compile (with pdftex or TexMaker), it seem like it gets stuck in a loop and wont create a pdf, but I can't see why?



Or is there a better way to achieve this?










share|improve this question
























  • Yes: using phi` when you want it, and `varphi`` when it is the one you need.

    – Bernard
    5 hours ago











  • @Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

    – Sergestus
    5 hours ago













2












2








2








I am trying to have one command (phi) draw two different symbols (varphi and regular phi) in the same document.



I have tried this with the below:



documentclassarticle
usepackageamsmath, amssymb

newcommandoldphiphi
renewcommandphivarphi

begindocument
$phi$
renewcommandphioldphi
$phi$
enddocument


But this wont compile (with pdftex or TexMaker), it seem like it gets stuck in a loop and wont create a pdf, but I can't see why?



Or is there a better way to achieve this?










share|improve this question
















I am trying to have one command (phi) draw two different symbols (varphi and regular phi) in the same document.



I have tried this with the below:



documentclassarticle
usepackageamsmath, amssymb

newcommandoldphiphi
renewcommandphivarphi

begindocument
$phi$
renewcommandphioldphi
$phi$
enddocument


But this wont compile (with pdftex or TexMaker), it seem like it gets stuck in a loop and wont create a pdf, but I can't see why?



Or is there a better way to achieve this?







math-mode macros pdftex symbols






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 5 hours ago







Sergestus

















asked 6 hours ago









SergestusSergestus

254




254












  • Yes: using phi` when you want it, and `varphi`` when it is the one you need.

    – Bernard
    5 hours ago











  • @Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

    – Sergestus
    5 hours ago

















  • Yes: using phi` when you want it, and `varphi`` when it is the one you need.

    – Bernard
    5 hours ago











  • @Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

    – Sergestus
    5 hours ago
















Yes: using phi` when you want it, and `varphi`` when it is the one you need.

– Bernard
5 hours ago





Yes: using phi` when you want it, and `varphi`` when it is the one you need.

– Bernard
5 hours ago













@Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

– Sergestus
5 hours ago





@Bernard I know that's the simplest way to do it really, but it would mean writing way to many extra letters :P

– Sergestus
5 hours ago










2 Answers
2






active

oldest

votes


















4














With let, it works:



documentclassarticle
usepackageamsmath, amssymb

letoldphi=phi
letphi=varphi

begindocument

$phi$

letphi=oldphi
$phi$

letphi=varphi
$phi$

letphi=oldphi
$phi$

enddocument


enter image description here






share|improve this answer























  • Great! I had just reached the same conclusion below, thanks!

    – Sergestus
    5 hours ago






  • 1





    Oh! I see. Great minds think together! :o)

    – Bernard
    5 hours ago


















0














I have solved this myself using let and so post this for posterity.



documentclassarticle
usepackageamsmath, amssymb

letoldphiphi
letphivarphi

begindocument
$phi$
letphioldphi
$phi$
enddocument


My understanding is that newcommandxy simply replaces "a" with "b" so can become circular, whereas letab actually sets a to the value of b, so resolves any self-referencing issues.






share|improve this answer























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    4














    With let, it works:



    documentclassarticle
    usepackageamsmath, amssymb

    letoldphi=phi
    letphi=varphi

    begindocument

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    enddocument


    enter image description here






    share|improve this answer























    • Great! I had just reached the same conclusion below, thanks!

      – Sergestus
      5 hours ago






    • 1





      Oh! I see. Great minds think together! :o)

      – Bernard
      5 hours ago















    4














    With let, it works:



    documentclassarticle
    usepackageamsmath, amssymb

    letoldphi=phi
    letphi=varphi

    begindocument

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    enddocument


    enter image description here






    share|improve this answer























    • Great! I had just reached the same conclusion below, thanks!

      – Sergestus
      5 hours ago






    • 1





      Oh! I see. Great minds think together! :o)

      – Bernard
      5 hours ago













    4












    4








    4







    With let, it works:



    documentclassarticle
    usepackageamsmath, amssymb

    letoldphi=phi
    letphi=varphi

    begindocument

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    enddocument


    enter image description here






    share|improve this answer













    With let, it works:



    documentclassarticle
    usepackageamsmath, amssymb

    letoldphi=phi
    letphi=varphi

    begindocument

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    enddocument


    enter image description here







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 5 hours ago









    BernardBernard

    175k776207




    175k776207












    • Great! I had just reached the same conclusion below, thanks!

      – Sergestus
      5 hours ago






    • 1





      Oh! I see. Great minds think together! :o)

      – Bernard
      5 hours ago

















    • Great! I had just reached the same conclusion below, thanks!

      – Sergestus
      5 hours ago






    • 1





      Oh! I see. Great minds think together! :o)

      – Bernard
      5 hours ago
















    Great! I had just reached the same conclusion below, thanks!

    – Sergestus
    5 hours ago





    Great! I had just reached the same conclusion below, thanks!

    – Sergestus
    5 hours ago




    1




    1





    Oh! I see. Great minds think together! :o)

    – Bernard
    5 hours ago





    Oh! I see. Great minds think together! :o)

    – Bernard
    5 hours ago











    0














    I have solved this myself using let and so post this for posterity.



    documentclassarticle
    usepackageamsmath, amssymb

    letoldphiphi
    letphivarphi

    begindocument
    $phi$
    letphioldphi
    $phi$
    enddocument


    My understanding is that newcommandxy simply replaces "a" with "b" so can become circular, whereas letab actually sets a to the value of b, so resolves any self-referencing issues.






    share|improve this answer



























      0














      I have solved this myself using let and so post this for posterity.



      documentclassarticle
      usepackageamsmath, amssymb

      letoldphiphi
      letphivarphi

      begindocument
      $phi$
      letphioldphi
      $phi$
      enddocument


      My understanding is that newcommandxy simply replaces "a" with "b" so can become circular, whereas letab actually sets a to the value of b, so resolves any self-referencing issues.






      share|improve this answer

























        0












        0








        0







        I have solved this myself using let and so post this for posterity.



        documentclassarticle
        usepackageamsmath, amssymb

        letoldphiphi
        letphivarphi

        begindocument
        $phi$
        letphioldphi
        $phi$
        enddocument


        My understanding is that newcommandxy simply replaces "a" with "b" so can become circular, whereas letab actually sets a to the value of b, so resolves any self-referencing issues.






        share|improve this answer













        I have solved this myself using let and so post this for posterity.



        documentclassarticle
        usepackageamsmath, amssymb

        letoldphiphi
        letphivarphi

        begindocument
        $phi$
        letphioldphi
        $phi$
        enddocument


        My understanding is that newcommandxy simply replaces "a" with "b" so can become circular, whereas letab actually sets a to the value of b, so resolves any self-referencing issues.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 5 hours ago









        SergestusSergestus

        254




        254



























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