RedPRL/sml-redprl

Make U^pre and U^hcom Kan again!

Closed this issue · 3 comments

I was enlightened by the comments given by Andrew Pitts. I believe it also works for U^hcom.

How about ECOM for empty composition types?

I still cannot figure out the elimination rule for this type, but maybe we never need to do so? I'm going to add this type once I'm able to work on RedPRL again.

Closed by #671.