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Possible Duplicate:
How to draw a commutative diagram?

Today i wanted to include a drawing of a commutative diagram in my answer on math.stackexchange.com - but did not find any way of doing that.

Isn't there yet such a thing to render $$\xymatrix{\ar @{} [dr] |{\#} P \ar[r]^f \ar[d]_\pi & P \ar[d]^\pi \\ M \ar[r]_{\bar f} & M }$$ or is it that i used the wrong syntax. If it is not included i would make this a feature request.

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marked as duplicate by t.b., Zev Chonoles Dec 15 '11 at 11:24

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  • $\begingroup$ xy and similar packages aren't implemented in MathJaX, yet. See here for the list of available commands and see also this discussion on meta.MO. $\endgroup$ – t.b. Dec 15 '11 at 10:30
  • $\begingroup$ Another related thread $\endgroup$ – t.b. Dec 15 '11 at 10:30
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    $\begingroup$ shall i delete it as it really is a duplicate? $\endgroup$ – epsilonhalbe Dec 15 '11 at 11:09
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    $\begingroup$ As you wish. I would probably leave it to document that it is requested from time to time. Nothing worse can happen than that the thread is closed as a duplicate. By the way: when I need a diagram, I sometimes create it in a LaTeX document on my computer and upload a screen shot. $\endgroup$ – t.b. Dec 15 '11 at 11:19
  • $\begingroup$ ah good idea to draw and screenshot it - will do that from now on if i've got time. $\endgroup$ – epsilonhalbe Dec 15 '11 at 11:24
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    $\begingroup$ @epsilonhalbe Deleting the question would make it impossible for you to receive further helpful comments such as those above (and this), cf. my post here.. $\endgroup$ – Bill Dubuque Dec 15 '11 at 18:08

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