Encyclopedia > Biconditional introduction

  Article Content

Biconditional introduction

Biconditional introduction is the inference that, if B follows from A, and A follows from B, then A if and only if B.

For example: if I'm breathing, then I'm alive; also, if I'm alive, then I'm breathing. Therefore, I'm breathing if and only if I'm alive.

Formally:

  ( A → B )
  ( B → A )  
  ∴ ( A ↔ B )



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
1904

... April 3 - Sally Rand[?], dancer (+ 1979) April 7 - Ralph Bunche[?], diplomat, winner of the Nobel Peace Prize April 16 - Fifi D'Orsay, actress (+ 1983) April 22 - ...

 
 
 
This page was created in 31.2 ms