Subscripts and superscripts

These are introduced by the `^' and `_' characters. Depending on the base character and the current style, the sub- or superscripts may go to the right of or directly above/below the main character. With letters it goes to the right.

$F_2^3$

produces `F<sub>2</sub><sup>3</sup>'. Note that the sub- and superscripts aren't in line. To make them so, you can add an invisible character after the `F'. $F{}_2^3$ produces F₂³.

With $\sum$ the default behaviour is different in display and text styles.

$\sum_{i=0}^2 $

produces $\sum_{i=0}^2$ (text style) but

\[\sum_{i=0}^2 \]

produces (in display style)

$$\sum_{i=0}^2$$

This default behaviour can be overridden, if you really need to. For example in text mode,

$\sum\limits_{i=0}^2$

produces $\sum\limits_{i=0}^2$