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Math Help - How to write a downside arrow over a letter?

  1. #1
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    How to write a downside arrow over a letter?

    Greetings,

    I would like to put a downside arrow over a letter in LaTeX, how could I do it? I need it for the convective term of the Navier-Stokes equations to mark which velocity the \nabla acts on.

    Thank you,
    Zoli
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  2. #2
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    Re: How to write a downside arrow over a letter?

    I'm not seeing what a "downside arrow" is. Do you mean an arrow to mark a variable as a vector as in $\vec{v}$ ?
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  3. #3
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    Re: How to write a downside arrow over a letter?

    I mean an arrow that points downwards: for example if the arrow in \vec{v} would be be rotated -90 degrees, that would be OK.
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  4. #4
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    Re: How to write a downside arrow over a letter?

    Quote Originally Posted by Zoli View Post
    I mean an arrow that points downwards: for example if the arrow in \vec{v} would be be rotated -90 degrees, that would be OK.
    $\overset{\downarrow}v$

    how about that?
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  5. #5
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    Re: How to write a downside arrow over a letter?

    Yes, I would like that one.
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  6. #6
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    Re: How to write a downside arrow over a letter?

    Quote Originally Posted by Zoli View Post
    Yes, I would like that one.
    \overset{\downarrow}{v}

    $\overset{\downarrow}{v}$
    Last edited by romsek; August 27th 2014 at 12:25 PM.
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  7. #7
    Forum Admin topsquark's Avatar
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    Re: How to write a downside arrow over a letter?

    You might find this site to be of help.

    -Dan
    Thanks from maxpancho
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  8. #8
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    Re: How to write a downside arrow over a letter?

    Thank you very much!
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  9. #9
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    Re: How to write a downside arrow over a letter?

    Quote Originally Posted by topsquark View Post
    You might find this site to be of help.

    -Dan
    Wow, amazing site.
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