[texhax] Equation Array Environment...

Chris Bourke cbourke at cse.unl.edu
Thu Aug 4 17:09:53 CEST 2005

I find the eqnarray/eqnarray* environments too restrictive--one can only
have three columns formatted in {rcl}.  I've tried using the
equationarray.sty file on ctan, but with no documentation, I don't find it
useful, and it doesn't seem to do exactly what I want:

I'd like an environment like the eqnarray/eqnarray* environment, but with
4 columns formatted in {rcll} in which the 4th column is always typeset in
either textrm or mathrm font.  The use of this forth column is for
explanations (i.e. "by Lemma x.x" or "By associativity", etc).

Is there anything out there that can do this, or can a more experienced
texer hack something together real quick?


Chris Bourke
cbourke at cse.unl.edu

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