diff options
| author | emakarov | 2007-10-16 16:28:17 +0000 |
|---|---|---|
| committer | emakarov | 2007-10-16 16:28:17 +0000 |
| commit | d7e249dc1bfc2dd04ccf23c57b7ad40f1902568d (patch) | |
| tree | 543ff4b9aee9cb17b6d3f2239cbc1f6a3e931929 /theories/Numbers/Integer/Binary | |
| parent | 201def788a3cac497134f460b90eb33bd5f80cce (diff) | |
Added transitivity and irreflexivity of <, as well as < -elimination for binary positive numbers.
Added directory contribs/micromega with the generalization of Frédéric Besson's micromega tactic for an arbitrary ordered ring. So far no tactic has been defined. One has to apply the theorems and find the certificate, which is necessary to solve inequations, manually.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10226 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Numbers/Integer/Binary')
| -rw-r--r-- | theories/Numbers/Integer/Binary/ZBinary.v | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/theories/Numbers/Integer/Binary/ZBinary.v b/theories/Numbers/Integer/Binary/ZBinary.v index cb8ac3b5b1..0a52d214a2 100644 --- a/theories/Numbers/Integer/Binary/ZBinary.v +++ b/theories/Numbers/Integer/Binary/ZBinary.v @@ -132,7 +132,14 @@ Qed. End NZOrdAxiomsMod. -Definition Zopp := Zopp. +Definition Zopp (x : Z) := +match x with +| Z0 => Z0 +| Zpos x => Zneg x +| Zneg x => Zpos x +end. + +Notation "- x" := (Zopp x) : Z_scope. Add Morphism Zopp with signature NZE ==> NZE as Zopp_wd. Proof. |