Jason (jcreed) wrote,

Good lord, I love %trustme in twelf. I don't know why I never got in the habit of using it as much before. I was able to convince myself that I do really understand the notation for inductions that are at once mutually recursive and lexicographic, since the proof checks given trustme-trust of all the boring lemmas that I didn't prove yet. I'm still perplexed by why I seemed to need an extra little widgety argument to convince the termination checker that when passing from the substitution branch to the reduction branch, the "smallness" of the reduction branch trumps the fact that the term data it receives may have gotten bigger.
Tags: twelf, work

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