Variable size symbols

The size of some mathematical symbols, notably summation signs, product signs, and integral signs, depends on the environment in which they appear (i.e., displaymath as opposed to math environments; see Math Formulas).

These include

The "limits" associated with these symbols are entered as subscripts for entries appearing below the symbol and as superscripts for entries appearing above the symbol. For example the sum from n=0 to infinity of xn would be entered as

  \sum_{n=0}^{\infty} x_{n}
The actual placement of the limits depends on whether this is in displaymath mode in which case they are placed below/above or in math mode in the text in which case they are placed as regular subscripts and superscripts.

The \sqrt command produces a radical symbol appropriately sized for the radicand argument.

Related topics:

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Sheldon Green,, 2 Jun 1995.