"So you are one of those logic friends?"
"Uhm ..."
"You're wearing a lambda."
"So you are one of those logic friends?"
"Uhm ..."
"You're wearing a lambda."
It's been a blast.
Here’s the trick that I’ll use — and it’s simple to do.
I’ll define a procedure, which I will call Q,
that will use P’s predictions of halting success
to stir up a terrible logical mess.
“Pfui! One must keep syntax and semantics strictly separated, or the world will fall apart.”
Hans van Ditmarsch, Wiebe van der Hoek & Barteld Kooi: Dynamic Epistemic Logic
It is not a good idea to name a state after its valuation.
Hans van Ditmarsch, Wiebe van der Hoek & Barteld Kooi: Dynamic Epistemic Logic