From pjt@ARL.MIL  Mon Dec 21 10:24:25 1998
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Date:     Mon, 21 Dec 1998 11:16:44 EST
From: Paul Tanenbaum <pjt@ARL.MIL>
To: rusin@math.niu.edu
cc: pjt@ARL.MIL
Subject:  http://www.math.niu.edu/~rusin/known-math
Message-ID:  <199812211116.aa07962@CAD.ARL.MIL>
Status: R


Dave,
     Nice accomplishment you have here.  One quibble, though, concerning
a field of interest to me personally.  06-XX.html gives the impression
that this field in the subject classification is limited to, or largely
to, lattices.  Not true!  There's tons of work included here being done
on general posets that's more combinatorial than algebraic, including
dimension theory, isomorphism problems, etc.  For references, you ought
to include

W. T. Trotter, _Combinatorics and Partially Ordered Sets: Dimension
Theory_, Johns Hopkins Series in Mathematical Sciences, Johns Hopkins
Univ. Press, Baltimore, 1992.

A journal dedicated to this kind of work, including lattice theory, is
_Order_, which is published by Kluwer.

     Regards,
     Paul


From rusin@math.niu.edu  Mon Dec 21 11:32:22 1998
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From: Dave Rusin <rusin@math.niu.edu>
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Date: Mon, 21 Dec 1998 11:32:21 -0600 (CST)
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To: pjt@ARL.MIL
Subject: Re:  http://www.math.niu.edu/~rusin/known-math
Cc: rusin@math.niu.edu
Status: R

Thank you for the suggestions. My own experience with 06 was limited to
rather algebraic material, but I had just recently been fine-tuning some
of the other introductory material here and noticed that by rights 06
ought to be more combinatorial than algebraic (see the picture at
	index/tour_alg.html
so your comments seem both on-target and well-timed!

Thanks also for the compliments.
dave