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Nov 23, 2018 at 22:04 comment added user521337 How is it known that linear transforms fixing $f_0$ are of the form you say (your very first line ?) ? And why $f_i^{\sigma}=\gamma_i f_i$ ?
Nov 14, 2018 at 9:56 history edited GreginGre CC BY-SA 4.0
added 113 characters in body
Nov 14, 2018 at 9:43 history answered GreginGre CC BY-SA 4.0