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

... - Wikipedia <<Up Contents Autocracy Autocracy is a form of government which resides in the absolute power of a single individual. The ...