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A similar "joke" in mathematics is that "a sheaf of groups is just a group of sheaves" (meaning that a sheaf of groups on a topological space X is a group objec
by ginnungagap 8y ago
A similar "joke" in mathematics is that "a sheaf of groups is just a group of sheaves" (meaning that a sheaf of groups on a topological space X is a group object in the category of sheaves of sets on X)
- tprice7 8y agoHere's a fun puzzle: concretely, what is a group of groups?
- ginnungagap 8y agoAn Abelian group