On 2017-08-24 17:34, Florian Haftmann wrote:
> I would still appreciate if someone would take the comment »Deviates
> from the definition given in the library in number theory« as a starting
> point to reconcile that definition with src/HOL/Number_Theory/Totient.thy.
Oh actually I fixed that a few months ago. I even wrote on the mailing
list back then, I think. Those definitions should now be equivalent.
I didn't know there was a totient function in HOL-Algebra, otherwise I
would have removed the duplicate back then.
(By the way, I have lots of additional material on the totient function
and related functions that will come to an AFP near you very soon)
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