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Re:1.5 is the midpoint between 0 and infinity in Ruby by Viliam1234 on Saturday November 28, 2020 @07:08PM (#25241729)
> Moreover, what is at the right side of {0|} is not infinity, but the empty set.

But { 0 | ω } = 1, right?

Re:1.5 is the midpoint between 0 and infinity in Ruby by tromp on Sunday November 29, 2020 @04:42AM (#25244071)
Correct. As is { 0 | n } for any n > 1.