% wormux level
% felix salfelder 2007


\documentclass[landscape]{article}
\usepackage{amsmath, amssymb}
\usepackage[isolatin]{inputenc}
\usepackage{german}
\usepackage[matrix,arrow,cmtip,curve]{xy}
\usepackage[active]{srcltx}

%%%%%%%%%%%
\pagestyle{empty}


\newcommand{\ox}{\otimes}

\newcommand{\OA}{\operatorname{A_\star}}
\newcommand{\OB}{\mathbb B \times \{ a,b \}}
\newcommand{\OC}{\mathbb C}
\newcommand{\OD}{\mathcal D_+}
\renewcommand{\OE}{{\coprod_{p}\mathcal F_p}}
\newcommand{\OF}{{\operatorname{coker} \varphi}}
\newcommand{\OG}{{\operatorname{Gal}( \mathbb{C} / \overline{ \mathbb Q})}}
\newcommand{\OH}{\operatorname{H}^1}
\newcommand{\OI}{\mathcal I}
\newcommand{\OJ}{{\operatorname{M}(n,\mathbb F_3)}}
\newcommand{\OK}{\Bbbk}
\newcommand{\OL}{\mathcal L^p(\mathbb R;\mathbb C)}
\newcommand{\OLL}{\underset{\leftarrow}{\Omega_k}}
\newcommand{\OM}{{\mathcal M^\bot} }
\newcommand{\ON}{{\mathbb N_0} }
\newcommand{\OO}{\mathcal O}
\newcommand{\OOO}{0}
\newcommand{\OP}{{\mathbb P_{\mathbb R}^2}}
\newcommand{\OQ}{{\mathbb Q_p}}
\newcommand{\OR}{{\mathbb R/ \mathbb Z}}
\newcommand{\OS}{\bigoplus V_\alpha}
\newcommand{\OT}{{\mathbb C \ox_\mathbb Z M}}
\newcommand{\OU}{{\operatorname{SU}(3)}}
\newcommand{\OW}{\mathcal W}
\newcommand{\OV}{\mathcal U \ox_{\mathfrak b} \mathbb C_\mu}
\newcommand{\OX}{\mathfrak X(T)}
\newcommand{\OY}{{\mathfrak{sl}_3}}
\newcommand{\OZ}{{\operatorname V(x^3-y^2)}}

\newcommand{\MA}{x \mapsto tx}
\newcommand{\MB}{\frac{\operatorname d}{\operatorname dt}}
\newcommand{\MC}{{\partial}}
\newcommand{\MD}{\iota}
\newcommand{\ME}{{\operatorname{ext}}}
\newcommand{\MF}{{f^\bullet}}

\newcommand{\MI}{{\int_\Gamma}}
\newcommand{\MJ}{{\cdot^j}}
\newcommand{\MK}{{\kappa}}
\newcommand{\ML}{{\ell}}
\newcommand{\MM}{{\cdot m_\alpha}}
\newcommand{\MN}{{\nabla}}
\newcommand{\MZ}{\zeta}

\begin{document}

$\xymatrix{
A  \ar[r] \ar[d]^\MC      &\OB \ar@{.>}[r]                 &\OK \ar[r]^\ME             &\OS\ar@{<-}[r]\ar[d]^MD               &  E \ar@{<<-}[r]          &\OK                              & G \ar[r]^{P(c)}        &\OR \ar[d]_a \\
\OQ       \ar[d]          &\OU        \ar[d]^\MC           &\OP \ar@/_/[d]^\MJ         &\OA\ar@{.>>}[r]\ar@/_/[l]^\MF         &\OK \ar[rd]_MD\ar@{<--}[d]& F \ar@{-->}[ru]                 &\OY                      & D  \ar[d]  \\
\OF\ar[rrdd] \ar[d]       &\OH        \ar[rd]              &\OL                        & D \ar@{<-}[r]_\MD  \ar[d]            &  E        \ar@/_/[u]     &\OD\ar@/^/[ru]                   & G \ar@/_/[r] \ar[d]    &\ON \ar[d]  \\
\OC \ar[d]                &                                &\OE \ar[rd]                &\OOO\ar@{^{(}->}[r]^\MA               &\OO \ar@{->>}[rd]         & \frac{v}{c} \ar[r]              &\OC                     &\OS \ar[d]  \\
\OJ\ar[r]^\MI\ar@{^{(}->}[d]&\OS                           &\OQ \ar[r]^\gamma          &\OI\ar[r]                             &  E        \ar@/^/[l]     &\OW\ar[rd]                       &\OH\ar[r]               &\ON \ar[d]   \\
\OI       \ar[d]          &\OT \ar[ru]        \ar[rd]      &\OLL\ar[r]^\pi             & D              \ar[d]                &\OZ\ar[ru]                & F \ar@{<.}[rd]                  &\OL                     &\OV \ar[d] \ar@{-->}[ld] \\
\OX\ar[d]^\varphi         &\OP        \ar@{->>}[dl]        &\OG                        &\OW\ar[r]^{f_\sharp}                  &\OX        \ar[rd]^\MZ    &\OG\ar[r]                        &\OX                     &\OR \ar[d]  \\
A  \ar[r]                 &\OX \ar[r] \ar@/^/@{-->}[r]^\MN & C  \ar[r]^\varrho         & \sqrt{D} \ar@{.>}[r]                 &\OF \ar[r]                &\OH\ar[r]                        &\OI\ar[r]               &\OW   \\
}$

\end{document}