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Article 96 of ucam.mlist.texhax:
From: owner-texhax-digest@nottingham.ac.UK (TeXhax Digest)
Subject: TeXhax Digest V1999 #8
Date: 9 Aug 1999 11:01:07 GMT

TeXhax Digest         Monday, August 9 1999         Volume 1999 : Number 008

(incorporating UKTeX Digest)

Today's Topics:

    Re: inverse limit symbol
    Re: inverse limit symbol
    semidirect products
    drawing a graphical representation of C structures

----------------------------------------------------------------------

Date: Fri, 23 Jul 1999 09:32:26 -0400 (EDT)
From: Barbara Beeton <bnb@ams.org>
Subject: Re: inverse limit symbol

fernando gouvea wants an "inverse limit" symbol that will take
limits.

    ... This should be a usual
    lim, with a left-pointing arrow under it, and it should be a "math operator
    with limits", that is, one should be able to write something like \ilim_n
    and get

 		lim
 		<--
 		 n

    with, of course, the right spacing and so on.

this can be done quite easily, building on the existing ams-latex
definition \varinjlim:

    \newcommand{\ilim}{\mathop{\varinjlim}\limits}

using it:

   \[
   abc \ilim_n def
   \]

of course, as in-line text, the lower limit will appear in subscript
position.
							-- bb

------------------------------

Date: Fri, 23 Jul 1999 10:06:54 -0400
From: "Fernando Q. Gouvea" <fqgouvea@colby.edu>
Subject: Re: inverse limit symbol

**** On Fri, 23 Jul 1999 09:32:26 -0400 (EDT), Barbara Beeton <bnb@ams.org> said:

bb> this can be done quite easily, building on the existing ams-latex
bb> definition \varinjlim:

bb>    \newcommand{\ilim}{\mathop{\varinjlim}\limits}

Thanks. There's always something really easy one has missed!

You mean \varprojlim, but this solution does seem to work fine. I've been
using the following ugly hack:

\newcommand{\ilim}[1]{\displaystyle\lim_{\xleftarrow[\hidewidth\scriptstyle
   #1\hidewidth]{\hphantom{\mathrm{iii}}}}}

which puts the arrow a bit lower than does \varprojlim. I'll have to
experiment with both versions to see.

bb> of course, as in-line text, the lower limit will appear in subscript
bb> position.

So one probably should just throw in a \displaystyle into the definition
(at least for my taste!).

Fernando

- --

Fernando Q. Gouvea
Department of Mathematics               Editor, FOCUS and MAA Online
Colby College                           http://www.maa.org
Waterville, ME 04901
fqgouvea@colby.edu                      http://www.colby.edu/math
==========================================================

Mophobia, n.:
        Fear of being verbally abused by a Mississippian.

------------------------------

Date: Sat, 24 Jul 1999 17:12:51 -0400
From: Noam Shomron <shomron@gnu.org>
Subject: semidirect products

Is there a collection of macros for producing symbols to denote semidirect
product, besides the standard "bowtie" symbol?  I have seen papers where a
broken direct sum sign is used, for instance.

Thanks!

Noam Shomron

------------------------------

Date: Fri, 6 Aug 1999 10:58:48 +0100 (BST)
From: Calum Mackay - Computer Systems CTE <calum.mackay@UK.Sun.COM>
Subject: drawing a graphical representation of C structures

Hi all,

Would anyone know of an existing package that draws C structures? I'm after
something that I can give a definition of a structure to, and have it draw a
little box depicting the struct, with fields in it linked (i.e. pointing to)
another struct box?

I imagine I could build something like this myself with pstricks, but I
wondered
if it had already been done.

best regards,
Calum.

------------------------------

End of TeXhax Digest V1999 #8
*****************************

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