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Timeline for Local to global flatness question

Current License: CC BY-SA 3.0

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Jun 6, 2011 at 7:18 vote accept Michael
Jun 4, 2011 at 9:13 comment added Martin Brandenburg @Mike: This argument is not quite correct, see the link to the counterexample in Lei's answer.
Jun 3, 2011 at 20:46 answer added Lei timeline score: 3
Jun 3, 2011 at 16:35 comment added Mike Skirvin It seems to me that you're saying your map factors through an open affine $U \subset X$ such that the map to $U$ is flat. But open immersions are flat and a composition of flat maps is flat, so that would seem to do it.
Jun 3, 2011 at 16:07 history asked Michael CC BY-SA 3.0