What is the cardinality of the power set {NULL, a, {NULL}, {{NULL}}}? Why? I believe it is 3.
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Originally Posted by peyton1983 What is the cardinality of the power set {NULL, a, {NULL}, {{NULL}}}? Why? I believe it is 3. To be very clear, the given set is . If that is correct, then that set contains four elements. So what is the carnality of its power set?
Originally Posted by Plato To be very clear, the given set is . If that is correct, then that set contains four elements. Unless , in which case it contains three elements.
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