Monthly Archives: April 2018

Kitchen Style Tutorials: Set Theory #5

If you haven’t noticed (likely you have, just have forgiven it) we weren’t rigorous in our definition of the union of sets: ∪ = {x: x ∈ X for some X in C}, or intersection of sets ∩ = {x: x … Continue reading

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Kitchen Style Tutorials: Set Theory #4

Unions and Intersections of Sets When we introduced Axiom of Specification we allowed ourselves to create new sets from the ones we can already find out there in the Universe. When we introduced Axiom of Pairing, we agreed we can … Continue reading

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