Am Dienstag, 17. Februar 2009 00:32 schrieb George Pollard:
On Mon, 2009-02-16 at 15:30 +0100, Fraser Wilson wrote:
Super! Also, best definition of bottom I've yet seen -- "ignoring _| _, which is a party pooper". Like good code, it's short, to the point, and obviously correct.
This brings up something I've thought about: On page 8, it is said that Pointed doesn't need to be checked because the theorem comes for free, but the free theorems paper was based upon total functions only; does having _|_ affect the free theorem for Pointed?
This was my question to Janis Voigtländer after his HaL 3 talk. He said that the free theorem stuff also holds in the presence of _|_, it’s just a bit more complicated to prove it. At least, this is how I understood it. :-) Best wishes, Wolfgang