Skip to main content

All Questions

1 vote
0 answers
69 views

Heterogeneous lists, large indices

Recently I had cause to define a type of heterogeneous lists in Lean, and wrote ...
Brendan Murphy's user avatar
1 vote
0 answers
179 views

Descriptions of heterogenous datatypes

When attempting to describe the datatype as appearing in my previous question, using indexed descriptions in style of The Gentle Art of Levitation to describe this datatype (using Agda for examples): <...
Ilk's user avatar
  • 547
6 votes
1 answer
253 views

Parameterized Datatypes in a Universe à la Tarski?

I'm wondering, is there a way to make a Universe à la Tarski that models all of the types in an open type theory, where there can be user defined parameterized inductive types? For context, I'm trying ...
Joey Eremondi's user avatar