【摘 要】
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If A and B are two sets,A is said to be a subsetof B if and only if every element of A is also anelement of B.The subset relation is indicated by thesymbolismA
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If A and B are two sets,A is said to be a subsetof B if and only if every element of A is also anelement of B.The subset relation is indicated by thesymbolismAB(or BA)which is read“A is a subset of B”or“A is includedin B”or“B includes A”.It is clear from the definition that every set A isa subset of itself.It is important to know that theempty setis the subset of any set A:A.(Wewill explain it in the logic part)Two sets A and B are said to be equal if and
If A and B are two sets, A is said to be a subset of B if and only if every element of A is also anelement of B. The subset relation is indicated by the symbolismAB (or BA) which is read “A is a subset of B ”or “ A is included in B ”or “ B includes A ”. It is clear from the definition that every set A isa subset of itself. It is important to know that the set of the subset of any set A: A. (Wewill explain it in the logic part) Two sets A and B are said to be equal if and
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