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Added a new Properties section to connected object. Including a theorem which is a bit of a hack (where I leave it to others to decide if ’hack’ should be interpreted positively or negatively!).
Thanks. Do we have something to point to for “$\infty$-extensitivity”?
Re-reading this proof (here) that in extensive categories connected objects are equivalently the indecomposables, I didn’t see how its first part proved what it claimed to be proving (I didn’t write this, originally). So I have now expanded/rewritten that first part, adding a tikzcd
-diagram which shows what, I think, the actual argument is.
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