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Jul 3, 2015 at 15:30 vote accept Silam
Apr 1, 2015 at 10:33 comment added Silam Thanks for your answer. Mitchell gave another classification which is more geometrical and I would like to know the correspendance between the one you gave, especially the case where the maximal subgroup stabilizes a quadric, does he stabilze a subspace for example or does a subgroup of index $2$?
Feb 14, 2015 at 13:41 history edited Derek Holt CC BY-SA 3.0
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Feb 14, 2015 at 12:53 history answered Derek Holt CC BY-SA 3.0