hmm, it's exhibiting that behaviour again, but only when I pump (約ab炮ab), and only when bookending is off. I'll see if I can replicate the behaviour with some more fuzzing?
While its true that both sets are countable I was wondering what the residue that's left from taking a set difference too, if there is a nice way to characterize it, seeing as the original question about cardinality seems to be resolved - both sets are not uncountable but are infinte
This post is hidden. It was deleted 3 days ago by José Carlos Santos, Harish Chandra Rajpoot, Leucippus. (Deleted because it does not answer...?) It is a patial answer and because it is deleted others cannot help fix it, IMO, it does directly answer half of the question.
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It's not entirely clear what specifically is wrong with the Q and A, and I strongly belive that if partial answers are not allowed as comments that they should be allowed as answers