Re: [Groff] Please help on a math symbol

[Robert D. Goulding]

On Thu, 5 Dec 2002, Min Xu wrote:

> Hi,
>
> I am now facing a problem with the ensemble average structure in *roff.
> An average is commonly written in a form of
>    <a>
> to denote the mean of a. However, when we have multiline structure inside,
> i.e.,
>     / a \
>      ---
>     \ b /
> does groff have a method in representing the larger version average symbol?
>
> A mere "left <   ...    right >" does not produce the desired result.
>
> Thanks.
>
> Min Xu

How about this egregious hack?

.char \(La \D'l .5 1'\D'l -.5 -1'\D'l .5 -1'\D'l -.5 1'\h'.5'
.char \(Ra \h'.5'\D'l -.5 1'\D'l .5 -1'\D'l -.5 -1'\D'l .5 1'
.EQ
define langle 'type "opening" vcenter \(La'
define rangle 'type "closing" vcenter \(Ra'
langle {{4x+x} over 2x} rangle
.EN

Robert.