@freemo could polish http://us.metamath.org from set theory
Or there are several systems in type theory.
@freemo it is more like a database.
Systems like Coq are more fun though I think. The standard library is proofs for a bunch of undergrad math like the dedikind cut construction of reals. Real numbers at your fingertips. 😁
@jmw150 metamath is definately not just a database. It is a special language you can use to write proofs and have a system automatically verify the validity of a proof as well as render the proof as a webpage.
That ability to confirm the validity of a proof is what I usually hear people talk about when they have mentioned metamath.
@jmw150 I heard of metamath before.. i really should try and get into it.