Redefining symbol midway through a document The Next CEO of Stack OverflowConflict between...

Is there such a thing as a proper verb, like a proper noun?

Would a completely good Muggle be able to use a wand?

What does "shotgun unity" refer to here in this sentence?

What CSS properties can the br tag have?

Help/tips for a first time writer?

Defamation due to breach of confidentiality

Can I calculate next year's exemptions based on this year's refund/amount owed?

Can you teleport closer to a creature you are Frightened of?

Is there a reasonable and studied concept of reduction between regular languages?

Is it convenient to ask the journal's editor for two additional days to complete a review?

TikZ: How to fill area with a special pattern?

My ex-girlfriend uses my Apple ID to login to her iPad, do I have to give her my Apple ID password to reset it?

Can this note be analyzed as a non-chord tone?

Physiological effects of huge anime eyes

What was Carter Burke's job for "the company" in Aliens?

How to set page number in right side in chapter title page?

How did Beeri the Hittite come up with naming his daughter Yehudit?

I dug holes for my pergola too wide

Does higher Oxidation/ reduction potential translate to higher energy storage in battery?

Easy to read palindrome checker

what's the use of '% to gdp' type of variables?

What is the difference between Statistical Mechanics and Quantum Mechanics

Would a grinding machine be a simple and workable propulsion system for an interplanetary spacecraft?

How to get the last not-null value in an ordered column of a huge table?



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:



documentclass{article}
usepackage{amsmath, amssymb}

newcommand{oldphi}{phi}
renewcommand{phi}{varphi}

begin{document}
$phi$
renewcommand{phi}{oldphi}
$phi$
end{document}


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
    4 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
    4 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:



documentclass{article}
usepackage{amsmath, amssymb}

newcommand{oldphi}{phi}
renewcommand{phi}{varphi}

begin{document}
$phi$
renewcommand{phi}{oldphi}
$phi$
end{document}


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
    4 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
    4 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:



documentclass{article}
usepackage{amsmath, amssymb}

newcommand{oldphi}{phi}
renewcommand{phi}{varphi}

begin{document}
$phi$
renewcommand{phi}{oldphi}
$phi$
end{document}


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:



documentclass{article}
usepackage{amsmath, amssymb}

newcommand{oldphi}{phi}
renewcommand{phi}{varphi}

begin{document}
$phi$
renewcommand{phi}{oldphi}
$phi$
end{document}


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 4 hours ago







Sergestus

















asked 5 hours ago









SergestusSergestus

254




254













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

    – Bernard
    4 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
    4 hours ago



















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

    – Bernard
    4 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
    4 hours ago

















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

– Bernard
4 hours ago





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

– Bernard
4 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
4 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
4 hours ago










2 Answers
2






active

oldest

votes


















4














With let, it works:



documentclass{article}
usepackage{amsmath, amssymb}

letoldphi=phi
letphi=varphi

begin{document}

$phi$

letphi=oldphi
$phi$

letphi=varphi
$phi$

letphi=oldphi
$phi$

end{document}


enter image description here






share|improve this answer
























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

    – Sergestus
    4 hours ago






  • 1





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

    – Bernard
    4 hours ago



















0














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



documentclass{article}
usepackage{amsmath, amssymb}

letoldphiphi
letphivarphi

begin{document}
$phi$
letphioldphi
$phi$
end{document}


My understanding is that newcommand{x}{y} 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
























    Your Answer








    StackExchange.ready(function() {
    var channelOptions = {
    tags: "".split(" "),
    id: "85"
    };
    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: false,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: null,
    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
    },
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    });


    }
    });














    draft saved

    draft discarded


















    StackExchange.ready(
    function () {
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2ftex.stackexchange.com%2fquestions%2f482475%2fredefining-symbol-midway-through-a-document%23new-answer', 'question_page');
    }
    );

    Post as a guest















    Required, but never shown

























    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    4














    With let, it works:



    documentclass{article}
    usepackage{amsmath, amssymb}

    letoldphi=phi
    letphi=varphi

    begin{document}

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    end{document}


    enter image description here






    share|improve this answer
























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

      – Sergestus
      4 hours ago






    • 1





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

      – Bernard
      4 hours ago
















    4














    With let, it works:



    documentclass{article}
    usepackage{amsmath, amssymb}

    letoldphi=phi
    letphi=varphi

    begin{document}

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    end{document}


    enter image description here






    share|improve this answer
























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

      – Sergestus
      4 hours ago






    • 1





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

      – Bernard
      4 hours ago














    4












    4








    4







    With let, it works:



    documentclass{article}
    usepackage{amsmath, amssymb}

    letoldphi=phi
    letphi=varphi

    begin{document}

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    end{document}


    enter image description here






    share|improve this answer













    With let, it works:



    documentclass{article}
    usepackage{amsmath, amssymb}

    letoldphi=phi
    letphi=varphi

    begin{document}

    $phi$

    letphi=oldphi
    $phi$

    letphi=varphi
    $phi$

    letphi=oldphi
    $phi$

    end{document}


    enter image description here







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 4 hours ago









    BernardBernard

    175k776207




    175k776207













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

      – Sergestus
      4 hours ago






    • 1





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

      – Bernard
      4 hours ago



















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

      – Sergestus
      4 hours ago






    • 1





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

      – Bernard
      4 hours ago

















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

    – Sergestus
    4 hours ago





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

    – Sergestus
    4 hours ago




    1




    1





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

    – Bernard
    4 hours ago





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

    – Bernard
    4 hours ago











    0














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



    documentclass{article}
    usepackage{amsmath, amssymb}

    letoldphiphi
    letphivarphi

    begin{document}
    $phi$
    letphioldphi
    $phi$
    end{document}


    My understanding is that newcommand{x}{y} 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.



      documentclass{article}
      usepackage{amsmath, amssymb}

      letoldphiphi
      letphivarphi

      begin{document}
      $phi$
      letphioldphi
      $phi$
      end{document}


      My understanding is that newcommand{x}{y} 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.



        documentclass{article}
        usepackage{amsmath, amssymb}

        letoldphiphi
        letphivarphi

        begin{document}
        $phi$
        letphioldphi
        $phi$
        end{document}


        My understanding is that newcommand{x}{y} 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.



        documentclass{article}
        usepackage{amsmath, amssymb}

        letoldphiphi
        letphivarphi

        begin{document}
        $phi$
        letphioldphi
        $phi$
        end{document}


        My understanding is that newcommand{x}{y} 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 4 hours ago









        SergestusSergestus

        254




        254






























            draft saved

            draft discarded




















































            Thanks for contributing an answer to TeX - LaTeX 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.


            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%2ftex.stackexchange.com%2fquestions%2f482475%2fredefining-symbol-midway-through-a-document%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

            Gersau Kjelder | Navigasjonsmeny46°59′0″N 8°31′0″E46°59′0″N...

            Nässjö kommun Tettstader | Kjelder | NavigasjonsmenyeVIAFISNIGeoNamesMusicBrainz (area)

            Kvitkval Innhaldsliste Taksonomi og utvikling | Utsjånad og levevis | Utbreiing | Åtferd |...