From 97fefe1fcca363a1317e066e7f4b99b9c1e9987b Mon Sep 17 00:00:00 2001 From: Stephane Glondu Date: Thu, 12 Jan 2012 16:02:20 +0100 Subject: Imported Upstream version 8.4~beta --- plugins/setoid_ring/Rings_Z.v | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 plugins/setoid_ring/Rings_Z.v (limited to 'plugins/setoid_ring/Rings_Z.v') diff --git a/plugins/setoid_ring/Rings_Z.v b/plugins/setoid_ring/Rings_Z.v new file mode 100644 index 00000000..88904865 --- /dev/null +++ b/plugins/setoid_ring/Rings_Z.v @@ -0,0 +1,14 @@ +Require Export Cring. +Require Export Integral_domain. +Require Export Ncring_initial. + +Instance Zcri: (Cring (Rr:=Zr)). +red. exact Zmult_comm. Defined. + +Lemma Z_one_zero: 1%Z <> 0%Z. +omega. +Qed. + +Instance Zdi : (Integral_domain (Rcr:=Zcri)). +constructor. +exact Zmult_integral. exact Z_one_zero. Defined. -- cgit v1.2.3