All joints at their limits ©
HomeFAQMemberlistUsergroupsRegisterLog in

Share | 

 Truth function

Go down 
Over 100 posts !
Over 100 posts !

Posts : 141
Join date : 2010-11-14

PostSubject: Truth function   Sun Nov 21, 2010 9:14 am

In mathematical logic, a truth function is a function from a set of truth values to truth-values. Classically the domain and range of a truth function are {truth,falsehood}, but they may have any number of truth-values, including an infinity of them.

A sentence is truth-functional if the truth-value of the sentence is a function of the truth-value of its subsentences. A class of sentences is truth-functional if each of its members is. For example, the sentence "Apples are fruits and carrots are vegetables" is truth-functional since it is true just in case each of its subsentences "apples are fruits" and "carrots are vegetables" is true, and it is false otherwise. Not all sentences of a natural language, such as English, are truth-functional.

Sentences of the form "x believes that..." are typical examples of sentences that are not truth-functional. Let us say that Mary mistakenly believes that Al Gore was President of the USA on April 20, 2000, but she does not believe that the moon is made of green cheese. Then the sentence

port royal naples
iphone developers
Back to top Go down
View user profile
Over 100 posts !
Over 100 posts !

Posts : 301
Join date : 2010-11-26

PostSubject: Re: Truth function   Tue Dec 21, 2010 9:22 am

After years of development in our top quality facility, CIBEXO LABS is unveiling a new 3-part anabolic stack that unleashes more muscle growth and power on you than ever thought imaginable! All products have incredible effects when used alone, however, when combined, more...

dallas physician directory
gay travel
Back to top Go down
View user profile
Truth function
Back to top 
Page 1 of 1
 Similar topics
» The truth about our economy in 2 minutes
» Time for Truth by Jesus Villalobos
» Question about Reinforce Truth
» The Blame Truth Project
» What's One "Post-Justification" Truth That Changed Your Life/Outlook?

Permissions in this forum:You cannot reply to topics in this forum
Darkanimz :: General :: General Chat-
Jump to: