Variable size symbols

These include

`\sum`a summation sign (capital sigma)`\prod`a product (capital pi)`\coprod`a coproduct (inverted capital pi)`\int`an integral sign`\oint`a surface (circular) integral sign`\bigcup`big "U"`\bigcap`big inverted "U"`\bigvee`big "V"`\bigwedge`big inverted "V"`\bigodot`big "O" with dot at center`\bigotimes`big "O" with cross inside`\bigoplus`big "O" with a + inside`\biguplus`big "U" with a + inside

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 x_{n} would be entered as

\sum_{n=0}^{\infty} x_{n}The actual placement of the limits depends on whether this is in

Note that it is possible to treat several of these symbols (a common example
would be a double sum) as a single symbol for placing limits above and/or
below by using the `\mathop` command.

"Hats" and "tildes" over symbols which stretch (as best they can) to
the correct size for their arguments are produced by
`\widehat` and `\widetilde`.

Related topics:

- Delimiters can be made variable sized
- Math fonts and styles
- Math Formulas
- Math Symbols
- Math Miscellany
- Arrows
- Binary and relational operators
- Math function symbols
- Miscellaneous symbols
`\left``\right``\sqrt``\stackrel`and`\mathop`

Revised: Sheldon Green, 28 Nov 1995.