How can I render the connected sum of $n$ topological spaces (or other quite strange topological operations) in a "product-like" manner? What I'm looking for is writing, for example $$ {\Large{*}}_{i=1}^n G_i $$ for the free product of n groups. How can I render this with the # operation in topological spaces? (Yes, I'm studying Hatcher's AT...)
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4you'd probably get better answers if you ask over at tex.stackexchange.com – Willie Wong Nov 07 '10 at 12:27
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The Wikipedia article uses \bigvee. – Qiaochu Yuan Nov 07 '10 at 12:50
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I posted also in tex.stackexchange... Sorry for the bad question. Bigvee is already assigned to the wedge sum, very different from connected sum (I made a mistake in writing before) – fosco Nov 07 '10 at 12:55
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Why not just do `$#_{i=1}^n X_i$'? – Cheerful Parsnip Nov 07 '10 at 13:18
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1P.S. $#$ is an operation on manifolds, not arbitrary topological spaces. – Cheerful Parsnip Nov 07 '10 at 14:00
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This question was asked over at tex.se, Define strange operators, with an accepted answer by frabjous:
The
\mathop{..}command from amsmath makes its argument behave like a "large operator".
with some example code.
Charles Stewart
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