FRP in Lean: Reactive Signals and LTL.always

The Curry-Howard correspondence for LTL: FRP So far, what we’ve been doing is playing with LTL in the way that someone using a model checker like TLA+ might. We implemented a reactive system, executed some traces over that system, and wrote formulas to answer “does this trace satisfy this formula?” Later on, we saw how some formulas can be answered no matter which (valid!) trace is under…