From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 21 Mar 2012 21:25:48 +0000 (+0000)
Subject: wip exclusive haspatch - fix Merge Coherence (for disagree)
X-Git-Tag: f0.3~20
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=5eb289521e72ab31220fdf9ad5256cad88f2c76f;p=topbloke-formulae.git

wip exclusive haspatch - fix Merge Coherence (for disagree)
---

diff --git a/merge.tex b/merge.tex
index ca3304d..71ad81f 100644
--- a/merge.tex
+++ b/merge.tex
@@ -162,6 +162,8 @@ We will show for each of
 various cases that
 if $M \haspatch \p$, $D \not\isin C$,
 whereas if $M \nothaspatch \p$, $D \isin C \equiv \land D \le C$.
+And by $Y \haspatch \p$, $\exists_{F \in \py} F \le Y$ and this
+$F \le C$ so this suffices.
 
 Consider $D = C$:  Thus $C \in \py, L \in \py$.
 By Tip Own Contents, $\neg[ L \nothaspatch \p ]$ so $L \neq X$,