xiaojf said this at Sat, 14 May 2005 21:36:45 +0800:
>Hi,
>I can code the cycle in ConTeXt,but it's too ugly and I will try to
>improve it.
>here is my code:
>
>\starttext
>\placeformula
>\startformula
>\matrix{A+B&{\Delta G_1\atop\rightleftharpoons}&AB\cr
>\Delta G_3\!\!\upharpoonleft\!\downharpoonright&&
>\upharpoonleft\!\downharpoonright\!\!\Delta G_4\cr
>A'+B&{\rightleftharpoons\atop\Delta G_2}&A'B\cr}
>\stopformula
>\stoptext
Hmm. It seems like a reasonable starting point, but I'll admit this is
beyond my abilities to fix over this weekend. I hope some other TeXnician
might come along and offer some advice.
Best of luck,
adam
>There is a similar example in "The TeXbook"(example 18.46).
>You can try the follow code:
>
>$$\def\normalbaselines{\baselineskip20pt
>\lineskip3pt \lineskiplimit3pt }
>\def\mapright#1{\smash{
>\mathop{\longrightarrow}\limits^{#1}}}
>\def\mapdown#1{\Big\downarrow
>\rlap{$\vcenter{\hbox{$\scriptstyle#1$}}$}}
>\matrix{&&&&&&0\cr
>&&&&&&\mapdown{}\cr
>0&\mapright{}&{\cal O}_C&\mapright\iota&
>\cal E&\mapright\rho&\cal L&\mapright{}&0\cr
>&&\Big\Vert&&\mapdown\phi&&\mapdown\psi\cr
>0&\mapright{}&{\cal O}_C&\mapright{}&
>\pi_*{\cal O}_D&\mapright\delta&
>R^1f_*{\cal O}_V(-D)&\mapright{}&0\cr
>&&&&&&\mapdown{\theta_i\otimes\gamma^{-1}}\cr
>&&&&&&\hidewidth R^1f_*\bigl({\cal O}
>_V(-iM)\bigr)\otimes\gamma^{-1}\hidewidth\cr
>&&&&&&\mapdown{}\cr
>&&&&&&0\cr}$$
>
>Since i'm just a newbie of TeX, I don't really understand the first a few
>lines
>of the solution. I still need some learning and practice :)
ah, don't we all...
--
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Adam T. Lindsay, Computing Dept. [EMAIL PROTECTED]
Lancaster University, InfoLab21 +44(0)1524/510.514
Lancaster, LA1 4WA, UK Fax:+44(0)1524/510.492
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