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Sequence with 2 parameters (?)

  1. Jun 30, 2012 #1
    1. The problem statement, all variables and given/known data
    Could anyone please help me understand this notation? What is "it" under the variables? Is it some kind of sequence notation with 2 dimensions, or sequence notation which has the sequence member number multiplied by some other variable? What is this?

    Also, what could 0 over z mean, other than 0 exponent?


    2. Relevant equations
    MQcnP.png


    3. The attempt at a solution
    Tried Google search without help.
     
  2. jcsd
  3. Jun 30, 2012 #2

    micromass

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    This is truly impossible to answer without knowing the exact source of this equation.
     
  4. Jun 30, 2012 #3

    Simon Bridge

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    I'll second that: what's the context?
    Subscripts and superscripts are used for things besides iterations and powers... U238 is not normally read as the 238th power of U for example, and the x component of the initial velocity can be noted as v0x... giving two subscripts.
     
    Last edited: Jun 30, 2012
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