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Uses merely decidable equality, added length.

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Niels van der Weide
2017-09-21 14:12:51 +02:00
parent 0def5869cd
commit 39e2ce1c05
15 changed files with 193 additions and 106 deletions
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FiniteSets/kuratowski/extensionality.v
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@@ -2,6 +2,10 @@
Require Import HoTT HitTactics.
Require Import kuratowski.kuratowski_sets.
(** We prove extensionality via a chain of equivalences.
We end with proving that equality can be defined with the subset relation.
From that we can conclude that [FSet A] has decidable equality if [A] has.
*)
Section ext.
Context {A : Type}.
Context `{Univalence}.