# Difference between revisions of "Iff"

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'''Iff''' is an abbreviation for the phrase "if and only if." | '''Iff''' is an abbreviation for the phrase "if and only if." | ||

− | In order to prove a statement of the form, " | + | In order to prove a statement of the form, "<math>p</math> iff <math>q</math>," it is necessary to prove two distinct implications: |

− | If a statement is an "iff" statement, then it is a [[biconditional]] statement. | + | * <math>p</math> implies <math>q</math> ("if <math>p</math>, then <math>q</math>") |

+ | * <math>q</math> implies <math>p</math> ("if <math>q</math>, then <math>p</math>") | ||

+ | |||

+ | If a statement is an "iff" statement, then it is a [[conditional|biconditional]] statement. | ||

==See Also== | ==See Also== | ||

+ | * [[Logic]] | ||

− | + | {{stub}} | |

[[Category:Definition]] | [[Category:Definition]] | ||

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## Revision as of 14:40, 19 April 2008

**Iff** is an abbreviation for the phrase "if and only if."

In order to prove a statement of the form, " iff ," it is necessary to prove two distinct implications:

- implies ("if , then ")
- implies ("if , then ")

If a statement is an "iff" statement, then it is a biconditional statement.

## See Also

*This article is a stub. Help us out by expanding it.*