36 Unique factorization domains In Z, we can factor 6 as 2 Â· 3 = 3 Â· 2 = (â2) Â· (â3) = (â3) Â· (â2). In a certain sense,all of these factorizations are the same.Deï¬nition 36.1 Two elements in a ring R are associates if one is a unit of R times theother.
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In some years the Orthodox Easter Sunday occurs on the same day as the Western Easter Sunday. For example, this occurred in 1990 because the Western Easter Sunday date of (Gregorian calendar) April 15, 1990 is the same as the Orthodox Easter Sunday date of (Julian calendar) April 2, 1990.