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Apr 13, 2018 at 11:31 comment added GreginGre and since a $G$-torsor over a smooth algebraic group is smooth, the corollary applies. Thanks a lot!
Apr 13, 2018 at 11:27 comment added Matthieu Romagny This is a property of smooth schemes, and groups and torsors have nothing to do with it. See Bosch-Lütkebohmert-Raynaud, Néron Models, cor. 2.2/13.
Apr 13, 2018 at 11:12 history edited GreginGre CC BY-SA 3.0
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Apr 13, 2018 at 10:34 history edited GreginGre CC BY-SA 3.0
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Apr 13, 2018 at 10:28 history asked GreginGre CC BY-SA 3.0