# Mathematical Proof/Appendix/Answer Key/Mathematical Proof/Introduction/Notation

< Mathematical Proof | Appendix | Answer Key

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These are the answers to the exercises in section 1.2, Notation

- Use set theory notation
- , where
*P*is the set of all people and*L*is the set of all things with two legs. - , where
*M*is the set of all mythological creatures and*G*is the set of all things that are Greek. - , where
*A*is the set of all pies,*B*is the set of all things with pudding in them, and*C*is the set of all things with cream on the top.

- , where
- Venn Diagrams
- Negated statements
- There is a quick, brown fox that does not jump over any lazy dog.