package coq

You can search for identifiers within the package.

in-package search v0.2.0

Formal proof management system

Install

Dune Dependency

coq.inria.fr Edit opam file Versions (38)

Authors

T

The Coq development team, INRIA, CNRS, and contributors.

Maintainers

C

coqdev@inria.fr

Sources

coq-8.15.0.tar.gz

sha256=73466e61f229b23b4daffdd964be72bd7a110963b9d84bd4a86bb05c5dc19ef3

doc/coq-core.kernel/Univ/Variance/index.html

Module `Univ.Variance`Source

Sourcetype t =

| Irrelevant
| Covariant
| Invariant

A universe position in the instance given to a cumulative inductive can be the following. Note there is no Contravariant case because forall x : A, B <= forall x : A', B' requires A = A' as opposed to A' <= A.

Sourceval check_subtype : t -> t -> bool

check_subtype x y holds if variance y is also an instance of x

Sourceval sup : t -> t -> t

Sourceval pr : t -> Pp.t

Sourceval equal : t -> t -> bool