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Symbol of continuous product

  1. May 23, 2014 #1
    If the discrete summation is symbolized by ##\sum## and the continous by ##\int##, so, by analogoy, the discrete product is symbolized by ##\prod## and you already thought what is the symbol for the continuous product?
     
  2. jcsd
  3. May 23, 2014 #2

    Simon Bridge

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    It's called a "product integral" and has symbol:

    ##\prodi## ... drat PFLatex may not have one!

    Looks like: ##\int\!\!\!\!\!\times## or ##\int\!\!\!\!_P## though I figure a cap-pi would work too ... since the sum-integral symbol is ##\int\!\!\!\!\! _\Sigma## ... the display mode would look like:
    $$\int\!\!\!\!\!\!\times\; ,\qquad \int\!\!\!\!\!\! P\; ,\qquad \int\!\!\!\!\!\! \Pi$$


    ... or a tall, elongated, but lower-case letter "pi".

    Usually acceptable to just use the regular discrete product ##\Pi## since the context can make the meaning clear.
     
    Last edited: May 23, 2014
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