How do I set the margins of a centered math expression?

Question

Possible Duplicate:
How to globally change the spacing around equations?

For example,

this is a paragraph
\[ \frac{1}{2} \]
this is a paragraph

as result, I want something like

this is a paragraph


\[ \frac{1}{2} \]


this is a paragraph

Avoid $$ instead use \[ ... \]. See http://tex.stackexchange.com/questions/503/why-is-preferable-to — mythealias, Nov 03 '12 at 13:06

score 2 · Accepted Answer · answered Nov 03 '12 at 12:43

If I understand correctly, you want to adjust the vertical spacing which is set by the four length parameters

\abovedisplayskip
\abovedisplayshortskip
\belowdisplayskip
\belowdisplayshortskip

The default values depend on the current size for example the standard classes define \normalsize as

\renewcommand\normalsize{%
   \@setfontsize\normalsize\@xpt\@xiipt
   \abovedisplayskip 10\p@ \@plus2\p@ \@minus5\p@
   \abovedisplayshortskip \z@ \@plus3\p@
   \belowdisplayshortskip 6\p@ \@plus3\p@ \@minus3\p@
   \belowdisplayskip \abovedisplayskip
   \let\@listi\@listI}

so if you go \setlength\abovedisplayskip{2in plus 1in} after \normalsize you will get more space.

i dont know why but do not worked. So i used this solution http://tex.stackexchange.com/questions/69662/how-to-globally-change-the-spacing-around-equations — Fabricio, Nov 03 '12 at 14:05

How do I set the margins of a centered math expression?

1 Answers1