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This tag is for questions concerning the written representation of the English language, especially spelling and word breaks (including hyphenation).
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When mentioning several items each of which is “Aᵢ”, should I use “Aᵢ’s” with an apostrophe ...
Here is a sentence I’m about to write:
Given a family of sets { Aᵢ : 1 ≤ i ≤ n }, we may assume that the Aᵢ’s are disjoint.
I mean the sets in the family do not intersect with each other. I am wonde …