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Math Help - Subtext in latex

  1. #1
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    Subtext in latex

    How do I post in latex the subtext under some formulas.
    For example
    http://www.m-hikari.com/ija/forth/dr...JA5-8-2009.pdf
    Go to page 233 of this document and there are formulas with
    "max" for example, and under the "max" there is subtext.
    Just look at the ||A||_{1\infty} norm and you see that there are conditions under the "max" to the effect of (i,j)|\in.......
    How do I put this under the max?

    regards
    Bucephalus
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Bucephalus View Post
    How do I post in latex the subtext under some formulas.
    For example
    http://www.m-hikari.com/ija/forth/dr...JA5-8-2009.pdf
    Go to page 233 of this document and there are formulas with
    "max" for example, and under the "max" there is subtext.
    Just look at the ||A||_{1\infty} norm and you see that there are conditions under the "max" to the effect of (i,j)|\in.......
    How do I put this under the max?

    regards
    Bucephalus
    [tex]\max\limits_{(i,j)\in\dots}[tex] generates \max\limits_{(i,j)|\in\dots}.

    Note that \limits is also useful in putting subscripts under double and triple integrals!

    i.e. \iint\limits_R f\!\left(x,y\right)\,dA or \iiint\limits_G f\!\left(x,y,z\right)\,dV
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  3. #3
    Senior Member mollymcf2009's Avatar
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    Quote Originally Posted by Bucephalus View Post
    How do I post in latex the subtext under some formulas.
    For example
    http://www.m-hikari.com/ija/forth/dr...JA5-8-2009.pdf
    Go to page 233 of this document and there are formulas with
    "max" for example, and under the "max" there is subtext.
    Just look at the ||A||_{1\infty} norm and you see that there are conditions under the "max" to the effect of (i,j)|\in.......
    How do I put this under the max?

    regards
    Bucephalus
    \max_{j=1 ....} = \max_{j=1 ....}
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  4. #4
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    Here is what I have so far....

    Can I improve on this?

    ||A||_{(1,\infty)}=^{max}_{(i,j)|\in\{1,.....,m\}\  times\{1,.....,n\}}|a_{ij}|

    Thanks
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  5. #5
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Bucephalus View Post
    Can I improve on this?

    ||A||_{(1,\infty)}=^{max}_{(i,j)|\in\{1,.....,m\}\  times\{1,.....,n\}}|a_{ij}|

    Thanks
    [tex]||A||_{(1,\infty)}=\max\limits_{(i,j)|\in\{1,\dots ,m\}\times\{1,\dots,n\}}|a_{ij}|[/tex]

    OR

    [tex]||A||_{(1,\infty)}=\max_{(i,j)|\in\{1,\dots,m\}\ti mes\{1,\dots,n\}}|a_{ij}|[/tex] gives:

    ||A||_{(1,\infty)}=\max\limits_{(i,j)|\in\{1,\dots  ,m\}\times\{1,\dots,n\}}|a_{ij}| or ||A||_{(1,\infty)}=\max_{(i,j)|\in\{1,\dots,m\}\ti  mes\{1,\dots,n\}}|a_{ij}| respectively.
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  6. #6
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    that's awesome

    Quote Originally Posted by Chris L T521 View Post
    [tex]\max\limits_{(i,j)\in\dots}[tex] generates \max\limits_{(i,j)|\in\dots}.

    Note that \limits is also useful in putting subscripts under double and triple integrals!

    i.e. \iint\limits_R f\!\left(x,y\right)\,dA or \iiint\limits_G f\!\left(x,y,z\right)\,dV
    That's exactly what I'm looking for.
    Thanks for your help, both of you.

    Bucephalus
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  7. #7
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    I mean this is what I'm looking for and you showed me.

    Quote Originally Posted by Chris L T521 View Post
    [tex]||A||_{(1,\infty)}=\max\limits_{(i,j)|\in\{1,\dots ,m\}\times\{1,\dots,n\}}|a_{ij}|[/tex]

    OR

    [tex]||A||_{(1,\infty)}=\max_{(i,j)|\in\{1,\dots,m\}\ti mes\{1,\dots,n\}}|a_{ij}|[/tex] gives:

    ||A||_{(1,\infty)}=\max\limits_{(i,j)|\in\{1,\dots  ,m\}\times\{1,\dots,n\}}|a_{ij}| or ||A||_{(1,\infty)}=\max_{(i,j)|\in\{1,\dots,m\}\ti  mes\{1,\dots,n\}}|a_{ij}| respectively.

    once again, thanks Chris.
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  8. #8
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    @ Bucephalus : there's also this one :

    [tex]\underset{ (i,j)|\in\{1,\dots,m\}\times\{1,\dots,n\} }{\max}|a_{ij}|[/tex]

    \underset{ (i,j)|\in\{1,\dots,m\}\times\{1,\dots,n\} }{\max}|a_{ij}|
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