Renewcommand with ensuremath and brackets












0















I'm making an .sty file (which is called my-macros.sty and is in my home /texmf directory) where I define some commands that I constantly use. Among these commands, there are the following



newcommand{apol}{}

newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%

    {ensuremath{#2[##1]}}}

newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}


The apol command is to give a polynomial ring over a field. But once I change variables (from X to X,Y to X,Y,Z) and the field (from K to the rational numbers to a finite field) over and over throughout the text, I used DEFapol to define the variables (first argument of DEFapol) and the field (second argument). Note that the finite field with q elements is given by the other command fq. Note also that I want X,Y to be the default variables for my polynomial ring.



When I test these commands in the following MWE



documentclass{article}



usepackage{amsmath,amssymb,amsfonts,amsthm}

usepackage{my-macros}



begin{document}



DEFapol[X]{K}



$apol$



DEFapol{K}



$apol$



DEFapol[X,Y,Z]{fq}



$apol$



end{document}


the first two $apol$ expressions are what I want them to be, but the last is not: the fq command is taking [X,Y,Z] as its argument so the result is the following expression $mathbb{F}_{[X,Y,Z]}$. But what I really wanted was it to be $mathbb{F}_q[X,Y,Z]$. One solution for this would be to simply type



DEFapol[X,Y,Z]{fq[q]}


So my question is: is there another way to handle the brackets inside the definitions of my commands such that when I type



DEF[X,Y,Z]{fq}


I get the desired result, i.e., such that fq ignores [X,Y,Z] as its argument?






amsmath package-writing nesting







share|improve this question



























    0















    I'm making an .sty file (which is called my-macros.sty and is in my home /texmf directory) where I define some commands that I constantly use. Among these commands, there are the following



    newcommand{apol}{}
    
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
    
    {ensuremath{#2[##1]}}}
    
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}


    The apol command is to give a polynomial ring over a field. But once I change variables (from X to X,Y to X,Y,Z) and the field (from K to the rational numbers to a finite field) over and over throughout the text, I used DEFapol to define the variables (first argument of DEFapol) and the field (second argument). Note that the finite field with q elements is given by the other command fq. Note also that I want X,Y to be the default variables for my polynomial ring.



    When I test these commands in the following MWE



    documentclass{article}
    

    
usepackage{amsmath,amssymb,amsfonts,amsthm}
    
usepackage{my-macros}
    

    
begin{document}
    

    
DEFapol[X]{K}
    

    
$apol$
    

    
DEFapol{K}
    

    
$apol$
    

    
DEFapol[X,Y,Z]{fq}
    

    
$apol$
    

    
end{document}


    the first two $apol$ expressions are what I want them to be, but the last is not: the fq command is taking [X,Y,Z] as its argument so the result is the following expression $mathbb{F}_{[X,Y,Z]}$. But what I really wanted was it to be $mathbb{F}_q[X,Y,Z]$. One solution for this would be to simply type



    DEFapol[X,Y,Z]{fq[q]}


    So my question is: is there another way to handle the brackets inside the definitions of my commands such that when I type



    DEF[X,Y,Z]{fq}


    I get the desired result, i.e., such that fq ignores [X,Y,Z] as its argument?






    amsmath package-writing nesting







    share|improve this question

























      0












      0








      0








      I'm making an .sty file (which is called my-macros.sty and is in my home /texmf directory) where I define some commands that I constantly use. Among these commands, there are the following



      newcommand{apol}{}
      
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
      
    {ensuremath{#2[##1]}}}
      
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}


      The apol command is to give a polynomial ring over a field. But once I change variables (from X to X,Y to X,Y,Z) and the field (from K to the rational numbers to a finite field) over and over throughout the text, I used DEFapol to define the variables (first argument of DEFapol) and the field (second argument). Note that the finite field with q elements is given by the other command fq. Note also that I want X,Y to be the default variables for my polynomial ring.



      When I test these commands in the following MWE



      documentclass{article}
      

      
usepackage{amsmath,amssymb,amsfonts,amsthm}
      
usepackage{my-macros}
      

      
begin{document}
      

      
DEFapol[X]{K}
      

      
$apol$
      

      
DEFapol{K}
      

      
$apol$
      

      
DEFapol[X,Y,Z]{fq}
      

      
$apol$
      

      
end{document}


      the first two $apol$ expressions are what I want them to be, but the last is not: the fq command is taking [X,Y,Z] as its argument so the result is the following expression $mathbb{F}_{[X,Y,Z]}$. But what I really wanted was it to be $mathbb{F}_q[X,Y,Z]$. One solution for this would be to simply type



      DEFapol[X,Y,Z]{fq[q]}


      So my question is: is there another way to handle the brackets inside the definitions of my commands such that when I type



      DEF[X,Y,Z]{fq}


      I get the desired result, i.e., such that fq ignores [X,Y,Z] as its argument?






      amsmath package-writing nesting







      share|improve this question














      I'm making an .sty file (which is called my-macros.sty and is in my home /texmf directory) where I define some commands that I constantly use. Among these commands, there are the following



      newcommand{apol}{}
      
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
      
    {ensuremath{#2[##1]}}}
      
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}


      The apol command is to give a polynomial ring over a field. But once I change variables (from X to X,Y to X,Y,Z) and the field (from K to the rational numbers to a finite field) over and over throughout the text, I used DEFapol to define the variables (first argument of DEFapol) and the field (second argument). Note that the finite field with q elements is given by the other command fq. Note also that I want X,Y to be the default variables for my polynomial ring.



      When I test these commands in the following MWE



      documentclass{article}
      

      
usepackage{amsmath,amssymb,amsfonts,amsthm}
      
usepackage{my-macros}
      

      
begin{document}
      

      
DEFapol[X]{K}
      

      
$apol$
      

      
DEFapol{K}
      

      
$apol$
      

      
DEFapol[X,Y,Z]{fq}
      

      
$apol$
      

      
end{document}


      the first two $apol$ expressions are what I want them to be, but the last is not: the fq command is taking [X,Y,Z] as its argument so the result is the following expression $mathbb{F}_{[X,Y,Z]}$. But what I really wanted was it to be $mathbb{F}_q[X,Y,Z]$. One solution for this would be to simply type



      DEFapol[X,Y,Z]{fq[q]}


      So my question is: is there another way to handle the brackets inside the definitions of my commands such that when I type



      DEF[X,Y,Z]{fq}


      I get the desired result, i.e., such that fq ignores [X,Y,Z] as its argument?






      amsmath package-writing nesting




      amsmath package-writing nesting






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 10 mins ago









      LararaLarara

      1668




      1668






















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          documentclass{article}
          

          
usepackage{amsmath,amssymb,amsfonts,amsthm}
          

          
newcommand{apol}{}
          
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
          
    {ensuremath{#2{}[##1]}}}
          
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}
          

          
begin{document}
          

          
DEFapol[X]{K}
          

          
$apol$
          

          
DEFapol{K}
          

          
$apol$
          

          
DEFapol[X,Y,Z]{fq}
          

          
$apol$
          

          
end{document}


          enter image description here





          share























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            documentclass{article}
            

            
usepackage{amsmath,amssymb,amsfonts,amsthm}
            

            
newcommand{apol}{}
            
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
            
    {ensuremath{#2{}[##1]}}}
            
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}
            

            
begin{document}
            

            
DEFapol[X]{K}
            

            
$apol$
            

            
DEFapol{K}
            

            
$apol$
            

            
DEFapol[X,Y,Z]{fq}
            

            
$apol$
            

            
end{document}


            enter image description here





            share




























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              documentclass{article}
              

              
usepackage{amsmath,amssymb,amsfonts,amsthm}
              

              
newcommand{apol}{}
              
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
              
    {ensuremath{#2{}[##1]}}}
              
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}
              

              
begin{document}
              

              
DEFapol[X]{K}
              

              
$apol$
              

              
DEFapol{K}
              

              
$apol$
              

              
DEFapol[X,Y,Z]{fq}
              

              
$apol$
              

              
end{document}


              enter image description here





              share


























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                documentclass{article}
                

                
usepackage{amsmath,amssymb,amsfonts,amsthm}
                

                
newcommand{apol}{}
                
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
                
    {ensuremath{#2{}[##1]}}}
                
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}
                

                
begin{document}
                

                
DEFapol[X]{K}
                

                
$apol$
                

                
DEFapol{K}
                

                
$apol$
                

                
DEFapol[X,Y,Z]{fq}
                

                
$apol$
                

                
end{document}


                enter image description here





                share













                documentclass{article}
                

                
usepackage{amsmath,amssymb,amsfonts,amsthm}
                

                
newcommand{apol}{}
                
newcommand{DEFapol}[2][X,Y]{renewcommand{apol}[1][#1]%
                
    {ensuremath{#2{}[##1]}}}
                
newcommand{fq}[1][q]{ensuremath{mathbb{F}_{#1}}}
                

                
begin{document}
                

                
DEFapol[X]{K}
                

                
$apol$
                

                
DEFapol{K}
                

                
$apol$
                

                
DEFapol[X,Y,Z]{fq}
                

                
$apol$
                

                
end{document}


                enter image description here






                share











                share


                share










                answered 46 secs ago









                Steven B. SegletesSteven B. Segletes

                155k9200409




                155k9200409






























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