Could it be related to invariants? Next => Prop implies []Next => []Prop?
H
--On page 64 of A Science of Concurrent Programs we have the formula:
(3.21) ⊨ F⇒ G implies ⊨ □F ⇒□G
which Lamport claims "lies at the heart of much temporal logic reasoning."
I understand why the rule is true, but I have been wracking my brains trying to figure out how it is so fundamental and can't really come up with anything. Can anybody think of an example? Thanks!
Andrew Helwer--
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