Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!mailrus!cornell!rochester!ken
From: ken@cs.rochester.edu (Ken Yap)
Newsgroups: comp.dsp
Subject: Re: DSP textbook
Message-ID: <1989Sep25.033923.8607@cs.rochester.edu>
Date: 25 Sep 89 03:39:23 GMT
References:  <1989Sep20.195449.3833x@ivucsb.sba.ca.us> <7070001@hpnmdla.HP.COM> <459@eedsp.gatech.edu> <668@suntops.Tops.Sun.COM> <3085@quanta.eng.ohio-state.edu> <1989Sep24.032613.11841@utzoo.uucp>
Reply-To: ken@cs.rochester.edu
Organization: U of Rochester, CS Dept, Rochester, NY 14627, (716) 275-1448
Lines: 30

|>Is LaTeX sufficiently common to use as a medium?  It has just about everything
|>you might want, and it is high-level enough that you can still read the source
|>(well, most of the time, anyway :-)
|>
|>\sum_{i=0}^p a_i y_{n-i} = \sum_{l=0}^q b_i \xi_{n-i}
|
|I think it's going to come down to a war between TeX and eqn.  Each is more
|common in some environments.  Expressive power is similar; the eqn version
|of the above is (assuming I've read the TeX correctly):
|
|sum from i=0 to p a sub i y sub {n-i} = sum from l=0 to q b sub i xi sub {n-i}
								   ^^
Probably should be \(*x (Greek Xi).

|Sticking strictly to readability, and disregarding the who's-got-which-
|software issue, I think eqn comes out ahead -- fewer silly backslashes and
|fewer artifacts of the odd character set Knuth used.

If one doesn't like _ and ^ one can always do this

\def\sub{_}
\def\sup{^}
$\sum\sub{i=0}\sup p a\sub i y\sub{n-i} = \sum\sub{l=0}\sup q b\sub i \xi\sub{n-i}$

which might look better with full braces

$\sum\sub{i=0}\sup{p} a\sub{i} y\sub{n-i} = \sum\sub{l=0}\sup{q} b\sub{i} \xi\sub{n-i}$

Looks even better than eqn to me since you can tell which scripts
belongs to which symbols. What's the big deal?