On 14.07.08, Manveru wrote: > Right, > But I expected \displaystyle to be larger than normal (as in PDF). Do you > see difference between PDF and that what LyX displays?
\displaystyle is not larger 'per-se', it uses the style of a "display" formula (in contrast to inline formulae). This means that sum and integral will be larger (maybe some others as well) but not "normal" letters and symbols. Also, the placement of indices might differ. GM