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Mar 9, 2019 at 8:14 vote accept Matthias Ludewig
Sep 24, 2018 at 13:58 comment added Bombyx mori @MatthiasLudewig: I mean kernel and cokernel. Without abelian category this is not something well defined in general...
Sep 24, 2018 at 6:38 comment added Matthias Ludewig Which exact sequences are you referring to? As far as I can see, I didn't write down any...
Sep 13, 2018 at 21:52 history answered Bombyx mori CC BY-SA 4.0