Rumored Buzz on Dịch vụ đồ cúng khai trương
includes a cardinality scaled-down than or equivalent towards the cardinality of A further set T displaystyle T The disjoint union of two or even more sets is comparable for the union, but, if two sets have components in common, these features are regarded as unique in the disjoint union. That is obtained by labelling the elements via the i