(eplain.info)Commutative diagrams

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6.2 Commutative diagrams
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The primitive commands '\drawline' and '\drawvector' can be used to
typeset arrow theoretic diagrams. This section describes (1) macros to
facilitate typesetting arrows and morphisms, and (2) macros to
facilitate the construction of commutative diagrams. All macros
described in this section must be used in math mode.

Arrows and morphisms

Construction of commutative diagrams

Commutative diagram parameters