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Jul 23, 2021 at 23:39 comment added Richard Lyons @GeoffRobinson: Thanks for the clarification.
Jul 23, 2021 at 16:25 comment added Derek Holt @GeoffRobinson That is a slightly unusual example of an imprimitive group in that it acts faithfully on the blocks, so its kernel is trivial.
Jul 23, 2021 at 16:02 comment added Geoff Robinson By the way, believe that some of the groups in Brauer's list are actually imprimitive : for example, the $5$ dimensional character of $A_{5}$ is induced from any non-trivial linear character of $A_{4}.$
Jul 23, 2021 at 15:41 history edited Richard Lyons CC BY-SA 4.0
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Jul 23, 2021 at 15:36 history edited LSpice CC BY-SA 4.0
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S Jul 23, 2021 at 15:22 history answered Richard Lyons CC BY-SA 4.0
S Jul 23, 2021 at 15:22 history made wiki Post Made Community Wiki by Richard Lyons