'If and only if"

Comments

• J.Y. Ping Administrator Instructor

  November 2013 14225 karma

  http://7sage.com/lesson/advanced-bi-conditionals/
• Ruby Soho Core Member

  November 2013 106 karma

  Thank you JY )
• AJ L Free Trial Member

  November 2013 edited November 2013 24 karma

  I've been noticing a lot of biconditionals in the rules of the logic games in the 50s PTs so far, and I believe the wording goes something like this:
  
  Either A or B, and not both
  indicates A<-->/B
  same as A->/B and /A->B
  
  If A then B otherwise not B.
  indicates A<-->B and /A<-->/B
  same as B<-->A and /B<-->/A
  
  I hope I did that right.
  
  Is there any other wording that would indicate biconditional?
  
  Thank you JY for the LG videos they are SO helpful and much better diagrams than other books.