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標題:
集合的語言
發問:
y = {x∈z | P(x)} 是等價於?x∈z,(x∈y→P(x)) 還是?x(x∈z?y→P(x)) ？
if you say it in words, y = {x∈z | P(x)} ---> y is a set of all x belongs to z such that P(x) ?x∈z,(x∈y→P(x)) ----> for all x belongs to z, if x belongs to y, then P(x) so these two are same~
其他解答:
集合的語言
發問:
y = {x∈z | P(x)} 是等價於?x∈z,(x∈y→P(x)) 還是?x(x∈z?y→P(x)) ？
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最佳解答:if you say it in words, y = {x∈z | P(x)} ---> y is a set of all x belongs to z such that P(x) ?x∈z,(x∈y→P(x)) ----> for all x belongs to z, if x belongs to y, then P(x) so these two are same~
其他解答:
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