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Thread: how to create def symbol?

  1. #1
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    Smile how to create def symbol?

    Please, help me define a math symbol for definition as shown in

    Table of mathematical symbols - Wikipedia, the free encyclopedia

    is defined as; equal by definition

    it is the equal sign under a small font 'def'

    the same symbol is also provided in OpenOffice math, but not in Latex.

    Thank you all.
    Stephen
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  2. #2
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    Quote Originally Posted by xvtstephen View Post
    Please, help me define a math symbol for definition as shown in

    Table of mathematical symbols - Wikipedia, the free encyclopedia

    is defined as; equal by definition

    it is the equal sign under a small font 'def'

    the same symbol is also provided in OpenOffice math, but not in Latex.

    Thank you all.
    Stephen
    Why not just use $\displaystyle :=$?
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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by xvtstephen View Post
    Please, help me define a math symbol for definition as shown in

    Table of mathematical symbols - Wikipedia, the free encyclopedia

    is defined as; equal by definition

    it is the equal sign under a small font 'def'

    the same symbol is also provided in OpenOffice math, but not in Latex.

    Thank you all.
    Stephen
    You can define them:

    \buildrel\triangle\over =

    gives:

    $\displaystyle \buildrel\triangle\over =$

    and:

    \buildrel d\over =

    gives:

    $\displaystyle \buildrel d\over =$

    (we can't put "def" over "=" because our LaTeX always seems to throw an reserved word exception to any string starting def.

    and of course \doteq gives $\displaystyle \doteq$

    CB
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  4. #4
    Super Member flyingsquirrel's Avatar
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    Quote Originally Posted by CaptainBlack View Post
    \buildrel\triangle\over =

    gives:

    $\displaystyle \buildrel\triangle\over =$
    \triangleq : $\displaystyle \triangleq$
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  5. #5
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    Quote Originally Posted by CaptainBlack View Post
    \buildrel d\over =

    gives:

    $\displaystyle \buildrel d\over =$

    (we can't put "def" over "=" because our LaTeX always seems to throw an reserved word exception to any string starting def.
    You can fool the system into accepting a reserved word like def by disguising it, splitting it up with a pair of braces.

    [tex]\buildrel \text{d{}ef}\over =[/tex] produces $\displaystyle \buildrel \text{d{}ef}\over =$ .
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