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Apr 28, 2020 at 16:51 vote accept Dmytro Taranovsky
Apr 24, 2020 at 21:34 history edited YCor CC BY-SA 4.0
removed capitals from title (the question was bumped anyway)
Apr 24, 2020 at 21:22 answer added Dmytro Taranovsky timeline score: 0
Nov 13, 2017 at 20:58 history edited Dmytro Taranovsky CC BY-SA 3.0
minor change (removed extra comma)
Nov 13, 2017 at 20:38 comment added Dmytro Taranovsky @JoelDavidHamkins Thank you for noticing the ambiguity. By $X_i$, I meant $i∈X$; I changed the domain of $X$ to clarify this.
Nov 13, 2017 at 20:26 history edited Dmytro Taranovsky CC BY-SA 3.0
clarified the domain of X
Nov 13, 2017 at 20:25 comment added Joel David Hamkins Could you clarify what you mean by $X_i$? Normally, for $X\subset\mathbb{N}$, I would interpret $X_i$ as the $i^{th}$ slice of the two-dimensional set coded by the elements of $X$ by means of a pairing function. But it seems that you may mean that $X_i$ is the $i^{th}$ element of $X$?
Nov 13, 2017 at 20:20 history asked Dmytro Taranovsky CC BY-SA 3.0