package coq-core

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The Coq Proof Assistant -- Core Binaries and Tools

Install

Dune Dependency

coq.inria.fr Readme Edit opam file Versions (9)

Authors

T

The Coq development team, INRIA, CNRS, and contributors

Maintainers

T

The Coq development team <coqdev@inria.fr>

Sources

coq-8.20.1.tar.gz

md5=0cfaa70f569be9494d24c829e6555d46

sha512=8ee967c636b67b22a4f34115871d8f9b9114df309afc9ddf5f61275251088c6e21f6cf745811df75554d30f4cebb6682f23eeb2e88b771330c4b60ce3f6bf5e2

doc/coq-core.kernel/Names/PRpred/index.html

Module `Names.PRpred`

Predicate on projection representation (ignoring unfolding state)

type elt = Projection.Repr.t

The type of the elements in the set.

type t

The type of sets.

val empty : t

The empty set.

val full : t

The set of all elements (of type elm).

val is_empty : t -> bool

Test whether a set is empty or not.

val is_full : t -> bool

Test whether a set contains the whole type or not.

val mem : elt -> t -> bool

mem x s tests whether x belongs to the set s.

val singleton : elt -> t

singleton x returns the one-element set containing only x.

val add : elt -> t -> t

add x s returns a set containing all elements of s, plus x. If x was already in s, then s is returned unchanged.

val remove : elt -> t -> t

remove x s returns a set containing all elements of s, except x. If x was not in s, then s is returned unchanged.

val union : t -> t -> t

Set union.

val inter : t -> t -> t

Set intersection.

val diff : t -> t -> t

Set difference.

val complement : t -> t

Set complement.

val equal : t -> t -> bool

equal s1 s2 tests whether the sets s1 and s2 are equal, that is, contain equal elements.

val subset : t -> t -> bool

subset s1 s2 tests whether the set s1 is a subset of the set s2.

val elements : t -> bool * elt list

Gives a finite representation of the predicate: if the boolean is false, then the predicate is given in extension. if it is true, then the complement is given

val is_finite : t -> bool

true if the predicate can be given as a finite set (if elt is a finite type, we can have is_finite x = false yet x is finite, but we don't know how to list its elements)