Double Not Arrow

eucalyptus · September 2014

Do you guys use the double not arrow that the PS LR Bible is talking about? I haven't yet stumbled upon a lesson where JY talks about it so it doesn't look like he's particularly fond of it. I personally find it quite confusing. Is the same as /A <-> /B?

iiiSpoon · September 2014

JYPing discusses it in length under advanced logic such as 'or but not both' relations.

cole.w.murdoch · September 2014

Double slash is part of if but only if if I remember correctly. A <->B is equivalent to /A <-> /B.
Here is the lesson http://classic.7sage.com/lesson/advanced-bi-conditionals/

eucalyptus · September 2014

OK awesome, thanks a lot!

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Double Not Arrow

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