- #1
mahmoud2011
- 88
- 0
The book I am reading says that [itex]\bigcap \phi[/itex] because every [itex]x[/itex] belongs to [itex]A \in \phi[/itex](since there is no such A ) , so [itex]\bigcap S[/itex] would have to be the set of all sets. now my question is why every [itex]x[/itex] belongs to [itex]A \in \phi[/itex].In other word I don't completely understand what this statement mean.
sorry if my question is silly.I began reading set theory for only 12 hours and I am new to the subject , I don't know if I had to take a course in logic first or not. If I must know logic , please recommend me to a book in logic .
sorry if my question is silly.I began reading set theory for only 12 hours and I am new to the subject , I don't know if I had to take a course in logic first or not. If I must know logic , please recommend me to a book in logic .
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