This feels like a stupid question, but I just want to makesure.
Does make any sense?
I know some people don't think 0 is a natural number, but ifit is in this case, would A0 exist? If so, doesA0 = ? If A0 does not exist, does thatmean the union of all sets An doesn't exist? I'mthinking the union of all sets An = [0,1), regardless ofA0. Could anyone give me some input and an explanation?Thanks.