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Negation

Negation. “not” ~. T. F. Disjunction. “or” V Only False when both statements are false. Conjunction. “and” ^ Only true when both statements are true. C onditional. “If….,then” → Only false when true then false. Biconditional. “If and only if” ↔

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Negation

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  1. Negation

  2. “not” • ~ T F

  3. Disjunction

  4. “or” • V • Only False when both statements are false

  5. Conjunction

  6. “and” • ^ • Only true when both statements are true

  7. Conditional

  8. “If….,then” • → • Only false when true then false

  9. Biconditional

  10. “If and only if” • ↔ • True when the truth value of both statements is the same.

  11. COnverse

  12. Change OrderEx. p→q converse: q→p

  13. Inverse

  14. Negate bothEx. p→qinverse: ~p→~q

  15. Contrapositve

  16. Change Order and negate bothEx. p→qcontrapositve: ~q→~p ALWAYS LOGICALLY EQUIVALENT TO THE ORIGINAL

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