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thehousecarpenter.wordpress.com
| | localtvwhnt.wordpress.com
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| | Reblogged on WordPress.com
| | thehighergeometer.wordpress.com
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| | Following on from last post I want to talk about the appropriate notion of morphism between the objects I defined. Recall that these are Lie groupoids $latex X$ with a map to the manifold $latex M$ satisfying some properties ($latex X_0 \to M$ and $latex X_1 \to X_0\times_MX_0$ are surjective submersions), and then equipped with...
| | kristalcantwell.wordpress.com
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| | Mini-polymath 4 has started. It is based on question 3 of the IMO. The research thread is here. There is a wiki here.
| | thisandthatthenextpart.wordpress.com
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