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May 10, 2020 at 20:23 comment added Georges Elencwajg Great comment, @Ilya. Круто !
May 10, 2020 at 17:44 history edited Arno Fehm CC BY-SA 4.0
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May 10, 2020 at 17:41 comment added Ilya Bogdanov Perhaps, it is more convenient to rephrase the condition in the exercise as follows: There exist $a$ and $c$ such that $cf(aX)$ has integer coefficients.
May 10, 2020 at 17:31 comment added Georges Elencwajg How interesting! Many thanks since this is completely foreign territory to me and I would never have stumbled upon that article by myself.
May 10, 2020 at 17:25 history edited Arno Fehm CC BY-SA 4.0
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May 10, 2020 at 17:18 history edited Arno Fehm CC BY-SA 4.0
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May 10, 2020 at 17:12 history answered Arno Fehm CC BY-SA 4.0