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Virtual double categories as a context for cooking categories of games

Dr Nathan Bowler ( University of Cambridge, DPMMS )
The constructions of categories of games tend to be combinatorially fiddly, but there is an abstract setting which allows a clean, unified approach. I'll explain the key kinds of abstract objects (virtual double categories and playpens) which are needed for this construction, and how the usual combinatorics of games emerges in a simple case.

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