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No Stupid [email protected] • 10 months ago

Is "If A then B" equal to "B if and only if A"?

41

Is "If A then B" equal to "B if and only if A"?

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No Stupid [email protected] • 10 months ago

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1•10 months ago
I mean it is the definition of “if and only if”. And by commutativity we also know that A iff B is equal to B iff A
- Rhynoplaz
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  2•10 months ago
  Removed by mod
  - @[email protected]
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    1•10 months ago
    Yeah if vs iff can be confusing at first. Trying to understand it with normal grammar doesn’t work right. It’s a lot more helpful to grok the symbols and so the truth tables by hand to see how they fit together

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