In "Mathematics All Arounde", Ch2, Exercise 2.1, #41, the problem is: {Florida} # {x : x is a state east of the Mississippi} Your answer is that {Florida} is NOT an element of {x}. If {Florida} is a set, it is still a member of the set {x : x is a state east of the Mississippi}. Why do you say that it is not?

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A: Given A and B two sets such that A ∩ B = A

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Q: PROOF EVALUATION (This type of exercise will appear occasionally): Each of the follow- ing a…

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Q: When is a set compact?

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Set Theory

Every field in the present world involves a set. The theory of sets was developed by German mathematician Georg Cantor while working on the “problems of trigonometric series”.