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3:01
YouTube
Dr. Trefor Bazett
Proving equalities of sets using the element method
In this video we prove that we can commute unions, that is change the order of a union of two sets. This is just a stand in for a larger class of equalities between sets. To prove this we use the element method. We need to show an element in the left hand side is in the right hand side, AND vice versa. FULL DISCRETE MATH PLAYLIST: https://www ...
53K views
Jul 3, 2017
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