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What symbol is this?

  1. Jun 10, 2007 #1
    What symbol is this??

    What does this mean " [tex] \vdots [/tex] "

    I don't what its called so I couldn't google it...Its to do with Susceptibility and Electric Field.
  2. jcsd
  3. Jun 10, 2007 #2
    (The symbol inside the quotation marks)
  4. Jun 11, 2007 #3
    What context was it used in? Might be clearer if you put down the whole equation / sentance it's used in..
  5. Jun 11, 2007 #4
    Its used like this:

    [tex] \overline{P} = \epsilon\chi^{(2)}\vdots\overline{E} [/tex]

    (In relation to polarization and susceptibility of an EM wave)
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