Mistake in description of TnI: States that TnI means "the inversion of the transposition" - formula shows it to be the other way around, transposition of the inversion

I think Inversion process is not properly described:

[1,2,3], "T11" -> [0,1,2] (ok for me)

So, if inversion(I) subtract each element of the list from twelve., how would:

[1,2,3], "T11I" -> [8,9,10] ?

First:

[1,2,3], "T11" -> [0,1,2]

Then:

[0,1,2] -> "I" -> [(12-0)%12, (12-1)%12, (12-2)%12] -> [0, 11, 10] (sorted: [0,10,11], but no way to get [8,9,10])

Or not?

• Why not just input an array? A input of array as a string is quite pointless IMO
• If you're checking the result to be strictly equal to another value, there's no need to check if it's not falsy/an array/has the right length.