@[email protected] to No Stupid [email protected] • 6 months agoIs "If A then B" equal to "B if and only if A"?message-square56fedilinkarrow-up151
arrow-up141message-squareIs "If A then B" equal to "B if and only if A"?@[email protected] to No Stupid [email protected] • 6 months agomessage-square56fedilink
minus-square@[email protected]linkfedilink1•6 months agoI 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
minus-squareRhynoplazlinkfedilink2•6 months agoOh yeah. I was very confused as to what that meant, but I learned something today.
minus-square@[email protected]linkfedilink1•6 months agoYeah 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
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
Oh yeah. I was very confused as to what that meant, but I learned something today.
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