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Timeline for Is this square a push-out square?

Current License: CC BY-SA 3.0

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May 8, 2013 at 15:23 comment added Zhen Lin See Fernando Muro's answer. For my answer, you only need an additive category and the existence of kernels and cokernels.
May 8, 2013 at 9:55 comment added HHH What is the minimal condition to impose to a square to deduce that it is a pull back or a push out?
May 8, 2013 at 9:53 comment added HHH Is this square also a pull back in any abelian category?
May 8, 2013 at 9:50 vote accept HHH
May 4, 2013 at 5:40 vote accept HHH
May 4, 2013 at 5:40
May 4, 2013 at 5:39 vote accept HHH
May 4, 2013 at 5:39
May 3, 2013 at 10:17 history answered Zhen Lin CC BY-SA 3.0