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of the results of these operations. One way to do this is with diagrams like that in Figure 1. This is called a Venn diagram. The interior of the rect- angle enclosing the diagram represents the universe of discourse U, and the interiors of the two circles represent the two sets A and B. Other sets formed by combining these sets would be represented by different regions in the diagram. For example, the shaded region in Figure 2
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  • owner: 101gedb92 - (no access) - how to prove it math text (1).pdf, p50
  • owner: Fcastror27 - (no access) - How to Prove It. A Structured Approach (Daniel Velleman) (2006).pdf, p50


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