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What exactly do you mean by "items ≌ ∅"? The only thing I read in that is "is isomorphic to the empty set", which with all reasonable definitions of isomorphic is the same as that 'items' is empty, which isn't the same as "items are all equal".



All items are equal to the second sequence. Which means, no items in "items". I could have picked a better example :P




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