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Aug 11, 2023 at 23:05 comment added LSpice Re, thanks. It is clear to me now.
Aug 11, 2023 at 22:59 comment added Will Sawin @LSpice It was missing a few words, fixed, though it may still be a bit unclear.
Aug 11, 2023 at 22:58 history edited Will Sawin CC BY-SA 4.0
added 25 characters in body
Aug 11, 2023 at 21:58 history edited LSpice CC BY-SA 4.0
Typos
Aug 11, 2023 at 21:57 comment added LSpice I have some trouble parsing the sentence "completely free except that $f$ modulo …" at the end of the second paragraph. What is the claim about the residue? (There's an equals sign, but that seems just to be saying that two $\gcd$s are equal. Incidentally, on that note, \gcd is pre-defined, and need not be \operatornamed, though of course it's harmless.)
Aug 11, 2023 at 21:32 comment added mtheorylord Ah, I see, thank you for the example. I'm still looking for general results though about $f$ modulo compositions.
Aug 11, 2023 at 21:25 history answered Will Sawin CC BY-SA 4.0