Hiya,
The two are equivalent, using the following rules:
* P ⋁ ¬Q ≡ Q ⇒ P
* □◇¬P ≡ ¬◇□P
Lamport presents both versions in section 8.4 for Specifying Systems, if you want to read a bit more about that. It comes free with the Toolbox, under the help menu bar.
H
--
You received this message because you are subscribed to the Google Groups "tlaplus" group.
To unsubscribe from this group and stop receiving emails from it, send an email to tlaplus+u...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/tlaplus/CAE7Z%3D%2B5wQ%2BcVxZVk0OuxXaXKu7RPFDA_F_iQafE6qKbipAzJMg%40mail.gmail.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/tlaplus/23929355-f9fe-f4d6-3bab-a32424b2f1e5%40gmail.com.