# [Xy-pic] xymatrix and matrix

Aleks Kleyn Aleks_Kleyn at MailAPS.org
Sun Mar 20 04:49:08 CET 2011

I want combine diagram of mappings with some notes in one equations. The
code

$\begin{matrix} \xymatrix { \ShowSymbol{affine space, division ring}: D\ar[r]|{*}^{f_{1,2}}& \Vector V\ar[r]|{*}^{f_{2,3}}& \Vcirc } & \begin{array}{r@{\,}l} f_{1,2}(d):&\Vector v\rightarrow d\ \Vector v \\ f_{2,3}(\Vector v):&A\rightarrow A+\Vector v \end{array} \end{matrix}$

creates very good image. However code

$\begin{matrix} \xymatrix { D\ar[r]|(.4){*}^{f_{1,2}}& A\ar[r]|{*}^{f_{2,3}}& A \\ &&D\ar[u]|{*}_{f_{1,2}} } & \begin{array}{r@{\,}l} f_{1,2}(d):&v\rightarrow d\,v \\ f_{2,3}(v):&w\rightarrow g(v, w) \\ g&\in\mathcal L(A^2;A) \end{array} \end{matrix}$

has extra line before diagram. The picture looks little shifted. I will
appreciate any idea to improve image.

Aleks Kleyn

<http://arxiv.org/a/kleyn_a_1> http://arxiv.org/a/kleyn_a_1

<http://AleksKleyn.blogspot.com/> http://AleksKleyn.blogspot.com/

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