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Math Help - Symbol help

  1. #1
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    Symbol help

    What does a o with a line through it mean?

    If you need more help can you give me the latex code for it and i can do a question with it contained thanks.
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  2. #2
    Moo
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    Hello,

    \theta ? That's a greek letter, called "theta"

    Or \emptyset ? That's the empty set.

    But since you put this in calculus, it's more likely the greek letter
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  3. #3
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    Quote Originally Posted by Moo View Post
    Hello,

    \theta ? That's a greek letter, called "theta"

    Or \emptyset ? That's the empty set.

    But since you put this in calculus, it's more likely the greek letter
    nah the bottom one

    Find a scalar function such that \emptyset(x,y,z) such that F(x,y,z) = delta(upside down traingle) \emptyset(x,y,z)

    what do i have to do?

    I have the equation F(x,y,z) by the way
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  4. #4
    MHF Contributor Drexel28's Avatar
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    Quote Originally Posted by adam_leeds View Post
    nah the bottom one

    Find a scalar function such that \emptyset(x,y,z) such that F(x,y,z) = delta(upside down traingle) \emptyset(x,y,z)

    what do i have to do?

    I have the equation F(x,y,z) by the way
    The empty set makes no sense to me here. Are you sure it isn't find a scalar function \phi(x,y,z) such that F(x,y,z)=\nabla \phi(x,y,z)?
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  5. #5
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    Quote Originally Posted by Drexel28 View Post
    The empty set makes no sense to me here. Are you sure it isn't find a scalar function \phi(x,y,z) such that F(x,y,z)=\nabla \phi(x,y,z)?
    yes its that

    what does this mean?
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  6. #6
    Moo
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    Greek letter "phi"
    Hadn't thought of this one
    Here, it denotes a function/mapping.

    \nabla is the gradient.
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