Timeline for Is the meaning of "irreducible manifold", "not reducible to other manifold"?
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| Jul 4, 2021 at 21:41 | comment | added | Ryan Budney | Generally speaking "irreducible" as a word in topology is pulled directly from algebra. Say you have a class of topological spaces with a monoidal operation, like oriented manifolds (up to diffeo) and the connect-sum operation, or symmetric spaces and the cartesian product operation. Then irreducible just means objects that can't be written as a product, exactly as in algebra. | |
| Jun 4, 2021 at 13:07 | history | answered | C.F.G | CC BY-SA 4.0 |