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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While many festivals are on fixed days, Easter is a movable feast and is usually celebrated on the first Sunday after the full moon on or after 21 March because it is based on the lunar calendar. 20 family days out in Wales this Easter: