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Apr 20, 2023 at 2:57 vote accept dennis
Apr 20, 2023 at 2:46 comment added dennis Very sorry for the bad notations. I have re-edited my questions.
Apr 20, 2023 at 2:43 history edited dennis CC BY-SA 4.0
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Apr 19, 2023 at 13:18 history became hot network question
Apr 19, 2023 at 10:43 comment added Carl-Fredrik Nyberg Brodda @DerekHolt I can confirm that I was misled, so I second this.
Apr 19, 2023 at 10:37 answer added Sean Eberhard timeline score: 6
Apr 19, 2023 at 7:52 comment added Derek Holt Your definition of $[H,K]$ is non-standard, which is a bad idea. The usual definition is that $[H,K]$ is the subgroup generated by the commutators $[h,k]$. In particular, your use of $[G,G]$ to denote a subset rather than a subgroup is likely to be misleading.
Apr 19, 2023 at 5:18 history edited YCor
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Apr 19, 2023 at 4:22 history asked dennis CC BY-SA 4.0