diff options
| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-11-05 18:27:39 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-11-05 18:27:39 +0000 |
| commit | fb2e6501516184a03fbc475921c20499f87d3aac (patch) | |
| tree | 42b2d7db1823b7548f016aed6bfa5f7d0a37889f /theories/ZArith/vo.itarget | |
| parent | c8ba2bca3d2d2118b290a199e374a1777e85e4b0 (diff) | |
Numbers: axiomatization, properties and implementations of gcd
- For nat, we create a brand-new gcd function, structural in
the sense of Coq, even if it's Euclid algorithm. Cool...
- We re-organize the Zgcd that was in Znumtheory, create out of it
files Pgcd, Ngcd_def, Zgcd_def. Proofs of correctness are revised
in order to be much simpler (no omega, no advanced lemmas of
Znumtheory, etc).
- Abstract Properties NZGcd / ZGcd / NGcd could still be completed,
for the moment they contain up to Gauss thm. We could add stuff
about (relative) primality, relationship between gcd and div,mod,
or stuff about parity, etc etc.
- Znumtheory remains as it was, apart for Zgcd and correctness proofs
gone elsewhere. We could later take advantage of ZGcd in it.
Someday, we'll have to switch from the current Zdivide inductive,
to Zdivide' via exists. To be continued...
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13623 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/ZArith/vo.itarget')
| -rw-r--r-- | theories/ZArith/vo.itarget | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/theories/ZArith/vo.itarget b/theories/ZArith/vo.itarget index 7802a8655..bfc52d3e4 100644 --- a/theories/ZArith/vo.itarget +++ b/theories/ZArith/vo.itarget @@ -31,3 +31,4 @@ Zsqrt_compat.vo Zwf.vo Zsqrt_def.vo Zlog_def.vo +Zgcd_def.vo
\ No newline at end of file |