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Dec 26, 2023 at 21:11 vote accept Pietro Majer
Dec 24, 2023 at 11:07 history edited John Bentin CC BY-SA 4.0
minor general editing
Dec 22, 2023 at 20:43 history became hot network question
Dec 22, 2023 at 20:20 history edited Pietro Majer CC BY-SA 4.0
added 10 characters in body
Dec 22, 2023 at 17:01 history edited Iosif Pinelis CC BY-SA 4.0
edited title
Dec 22, 2023 at 15:47 answer added Zach Teitler timeline score: 32
Dec 22, 2023 at 13:47 comment added Zach Teitler Yes. arxiv.org/abs/1711.08791, "Cantor Set Arithmetic" by Athreya, Reznick, and Tyson, in the Monthly in 2019: every element in $[0,1]$ can be written as $x^2y$ for some Cantor set elements $x,y$.
Dec 22, 2023 at 13:42 comment added Will Brian Hmm. I could be wrong, but it looks like the numbers that are products of $2$ members of the Cantor set should be a closed nowhere dense subset of $[0,1]$. If this were true for all $n \geq 2$, then you'd have your answer.
Dec 22, 2023 at 13:32 comment added Joel David Hamkins I'd suggest "every" in place of "any" in your title and questions. The word "any" is famously ambiguous between $\exists$ and $\forall$. In questions especially, it often seems more to carry the $\exists$ meaning, such as in "Was any student able to solve the problem?" or "Is any doctor on the plane?". But I believe you want the $\forall$ meaning.
Dec 22, 2023 at 13:15 comment added YCor It may be useful to call it , at least the first time, "the triadic Cantor set".
Dec 22, 2023 at 12:42 history asked Pietro Majer CC BY-SA 4.0