add \chainbullet operator
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@ -36,5 +36,12 @@ __HEADER__(Some extra math-related symbols.)
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%Make circled symbols
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\newcommand*\circled[1]{\tikz[baseline=(char.base)]{
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\node[shape=circle,draw,inner sep=2pt] (char) {#1};}}
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\node[shape=circle,draw,inner sep=2pt] (char) {#1};}
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}
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% When dealing with chain complexes, one often uses a bullet as placeholder for the index to mean the whole chain:
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\newcommand\chainpullet{\bullet}
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