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Nov 10, 2019 at 13:53 history edited Luc Guyot CC BY-SA 4.0
Fixes 3 notational typos: (1) superscript of $C_3$ (2) non-membership of $J$ (3) read $Q/Q_3$ instead of $A/Q_3$.
Nov 3, 2019 at 8:04 vote accept W4cc0
Nov 2, 2019 at 22:26 history undeleted YCor
Nov 2, 2019 at 22:26 history edited YCor CC BY-SA 4.0
fixed wrong claim, rewrote all the order 3 part.
Nov 2, 2019 at 21:42 history deleted YCor via Vote
Nov 2, 2019 at 20:53 history answered YCor CC BY-SA 4.0