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A nice natural example of a bicategory (non-strict 2-category) I didn't know about before: Objects are sets. Morphisms from A to B are "state…
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Read a bit about alexandrov topologies and chu spaces and stuff. Is there a good completion of the analogy preorder (i.e. alexandrov topology) :…
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Interesting paper from Noam and Paul-André. The technical condition about cartesian morphisms in the definition of a fibration of categories…
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