[OS X TeX] which is real math mode?

Mon Dec 12 15:50:48 EST 2005

On Monday, December 12, 2005, at 03:37 PM, Alain Schremmer wrote:

> A very small puzzle:
>
> Why do
>
>    \begin{displaymath}
>    0.37\;\denom{D\mathsmaller{EKA}\;Franklins} =
>    370.\;\denom{M\mathsmaller{ILLI}\;Franklins}
>    \end{displaymath}
>
> and
>
>    \begin{center}
>    $0.37\;\denom{D\mathsmaller{EKA}\;Franklins} = > 370.\;\denom{M\mathsmaller{ILLI}\;Franklins}$
>    \end{center}
>
> not typeset the same way? (In the former, \mathsmaller does not seem
> to have any effect.)
>
> \DeclareMathAlphabet{\denom}{OT1}{cmss}{sbc}{n}
> with
> TeXShop 1.40 on Mac 10.3.9

\begin{displaymath} puts one into a displayed math environment, like to
the $$2 + 2 = 4$$ of Plain TeX (which should not be used in LaTeX).

The other is a text / in-line math construct inside of a (non-math)
displayed environment. It is okay to use $2 + 2 = 4$ in LaTeX.

One should remember that one doesn't get the same size-changing options
in in-line text math mode as in a display mode.

William

--
senior graphic designer
Fry Communications

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