From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 7 Aug 2013 21:05:39 +0000 (+0100)
Subject: invariants: change notation in Bases' Children
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=topbloke-formulae.git;a=commitdiff_plain;h=31bef480a11f8b286a359200a1034131525af6fb;ds=sidebyside

invariants: change notation in Bases' Children
---

diff --git a/invariants.tex b/invariants.tex
index 3134e5c..2864765 100644
--- a/invariants.tex
+++ b/invariants.tex
@@ -29,9 +29,9 @@ We maintain these each time we construct a new commit. \\
     D \le C \implies \isforeign{D}
 }\]
 \[\eqn{Bases' Children}{
-  C \hasparent D \land D \in \pn
+  C \hasparent D \land D \in \pdn
     \implies
-  C \in \pn \lor C \in \py
+  C \in \pdn \lor C \in \pdy
 }\]
 
 We also assign each new commit $C$ to zero or one of the sets $\p$, as