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-rw-r--r--kernel/vars.mli4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/vars.mli b/kernel/vars.mli
index 0d5ab07db..cfa9fcb26 100644
--- a/kernel/vars.mli
+++ b/kernel/vars.mli
@@ -83,3 +83,7 @@ val subst_univs_constr : universe_subst -> constr -> constr
val subst_univs_level_constr : universe_level_subst -> constr -> constr
val subst_univs_level_context : Univ.universe_level_subst -> rel_context -> rel_context
+
+(** Instance substitution for polymorphism. *)
+val subst_instance_constr : universe_instance -> constr -> constr
+val subst_instance_context : universe_instance -> rel_context -> rel_context