54 lines
1.8 KiB
TeX
54 lines
1.8 KiB
TeX
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\documentclass[preview]{standalone}
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\usepackage{tikz}
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\usepackage{tikz-cd}
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\usepackage{amssymb}
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\usetikzlibrary{calc}
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% `pathmorphing` is necessary to draw squiggly arrows.
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\usetikzlibrary{decorations.pathmorphing}
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% A TikZ style for curved arrows of a fixed height, due to AndréC.
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\tikzset{curve/.style={settings={#1},to path={(\tikztostart)
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.. controls ($(\tikztostart)!\pv{pos}!(\tikztotarget)!\pv{height}!270:(\tikztotarget)$)
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and ($(\tikztostart)!1-\pv{pos}!(\tikztotarget)!\pv{height}!270:(\tikztotarget)$)
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.. (\tikztotarget)\tikztonodes}},
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settings/.code={\tikzset{quiver/.cd,#1}
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\def\pv##1{\pgfkeysvalueof{/tikz/quiver/##1}}},
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quiver/.cd,pos/.initial=0.35,height/.initial=0}
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% TikZ arrowhead/tail styles.
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\tikzset{tail reversed/.code={\pgfsetarrowsstart{tikzcd to}}}
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\tikzset{2tail/.code={\pgfsetarrowsstart{Implies[reversed]}}}
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\tikzset{2tail reversed/.code={\pgfsetarrowsstart{Implies}}}
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% TikZ arrow styles.
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\tikzset{no body/.style={/tikz/dash pattern=on 0 off 1mm}}
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\begin{document}
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\[\begin{tikzcd}
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&& \bullet && \bullet \\
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\\
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\bullet && \bullet && \bullet && \bullet \\
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\\
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\bullet && \bullet && \bullet && \bullet \\
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\\
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&& \bullet && \bullet && \bullet
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\arrow[from=3-3, to=5-3]
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\arrow[from=3-5, to=5-5]
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\arrow[from=5-3, to=5-5]
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\arrow[from=3-3, to=3-5]
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\arrow["\lrcorner"{anchor=center, pos=0.125}, draw=none, from=3-3, to=5-5]
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\arrow[from=3-1, to=3-3]
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\arrow[from=5-1, to=5-3]
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\arrow[from=3-5, to=3-7]
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\arrow[from=5-5, to=5-7]
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\arrow[from=1-5, to=3-5]
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\arrow[from=1-3, to=3-3]
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\arrow[from=5-3, to=7-3]
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\arrow[from=5-5, to=7-5]
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\arrow["\lrcorner"{anchor=center, pos=0.125}, draw=none, from=5-3, to=7-5]
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\arrow["\lrcorner"{anchor=center, pos=0.125}, draw=none, from=3-5, to=5-7]
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\arrow["\lrcorner"{anchor=center, pos=0.125}, draw=none, from=5-5, to=7-7]
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\end{tikzcd}\]
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\end{document}
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