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**To**:*Multiple recipients of list LATEX-L <LATEX-L@RELAY.URZ.UNI-HEIDELBERG.DE>***Subject**:**Commutative Diagrams, math fonts****From**:*Hans Aberg <haberg@MATEMATIK.SU.SE>***Date**: Wed, 16 Apr 1997 12:42:38 +0200- Reply-To: Mailing list for the LaTeX3 project <LATEX-L@RELAY.URZ.UNI-HEIDELBERG.DE>
- Sender: Mailing list for the LaTeX3 project <LATEX-L@RELAY.URZ.UNI-HEIDELBERG.DE>

I looked at the Valiente commutative diagrams survey http://www-lsi.upc.es/~valiente/arnhem.ps.gz which contains some really nice examples. What is the state of the matter of making an "official" LaTeX3 commutative diagrams package? -- The thing is that it seems me that one should have at least a simpler type of commutative diagrams package developed in connection with Alan Jeffrey arrows package suggestion (which is at CTAN in the info/ltx3pub directory). On the packages there mentioned (in Valiente's paper), I can note that only the Taylor package has the both arrows extending with labels and arrows extending to meet targets, and only the pstricks package has the nice curved arrowheads one would expect in a good typesetting, but this could be easily implemented in any package by using a suitable arrows font. In addition, a commutaive package must work on two levels: One should be quickly be able to knock out a correct diagram, and one should be able to finetune it, just as with other TeX formulas. Hans Aberg

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