Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Descent and induction principle of identity types of coequalizers #1140

Draft
wants to merge 10 commits into
base: master
Choose a base branch
from

Conversation

VojtechStep
Copy link
Collaborator

This PR adds the following constructions and proofs around coequalizers:

  • descent data, morphisms and equivalences
  • descent property of coequalizers
  • characterizations of various type families over coequalizers
  • variant of the flattening lemma using descent data
  • induction principle of identity types of coequalizers

The formalization itself is finished, but I still need to finish writing the prose in order for the PR to be mergeable

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants