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From: David Arnold <darnold@northcoast.com>
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Subject: Sample of the Day (Commutative Diagrams)
Date: Thu, 16 Sep 1999 11:12:09 -0700
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\input lcdplain
\magnification=1200

\AmSTeX\ provides a small set of rectangular commutative diagrams.
$$
\CD
G         @>\alpha >>      H\\
@VfVV                      @AAgA\\
G'        @<<\beta<        H'
\endCD\tag{$*$}
$$

\bye

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