[Xy-pic] Trouble with monomorphisms
Ross Moore
ross at ics.mq.edu.au
Sun Jul 31 22:11:35 CEST 2005
Hello Sesquipedalian,
On 31/07/2005, at 11:01 AM, Sesquipedalian Abecedarian wrote:
> The xyguide (p. 8) says to use a space to typeset a monomorphism
> nicely:
>
> \xymatrix{ A \ar @{>->} @< 2pt> [r] \ar @{ >->} @<-2pt> [r] & B }
This comment is given as part of an "Exercise".
The solution is given on p.14 .
HTH,
Ross Moore
>
> But on my system (Debian stable tetex), this generates an error:
>
> ! Xy-pic error: illegal <dir>: \dir { >} not defined.
> \xyerror@ ...#2}\fi \errmessage {Xy-pic error: #1}
> }
> l.1597 ...< 2pt> [r] \ar @{ >->} @<-2pt> [r] & B }
>
> I actually want to typeset a vertical monomorphism, so simply adding
> space to the vertex label doesn't work.
>
> Any ideas? Thanks in advance.
>
> Xy-pic version 3.7 <1999/02/16>
> Copyright (c) 1991-1998 by Kristoffer H. Rose <krisrose at ens-lyon.fr>
> Xy-pic is free software: see the User's Guide for details.
>
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>
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Ross Moore ross at maths.mq.edu.au
Mathematics Department office: E7A-419
Macquarie University tel: +61 +2 9850 8955
Sydney, Australia 2109 fax: +61 +2 9850 8114
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