X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=topbloke-formulae.git;a=blobdiff_plain;f=lemmas.tex;h=937398207615e337585cdf7773d0c33f66f6a9f6;hp=40cc5f488a6403581a1561936be982097dc5327f;hb=3ca0fff3d7e2f140e888ff286360a19db1828035;hpb=3bf452b2a0f1c9a3ba22d011fb216c738e1b299f

diff --git a/lemmas.tex b/lemmas.tex
index 40cc5f4..9373982 100644
--- a/lemmas.tex
+++ b/lemmas.tex
@@ -133,12 +133,12 @@ $$
  \Big[
    C \hasparents \{ A \}
  \Big] \implies \left[
-   \bigforall_{P \patchisin C} \pendsof{C}{\p} = \{ T \}
+   \bigforall_{P \patchisin C} \pendsof{C}{\py} = \{ T \}
  \right]
 $$
 \proof{
-  Trivial for $C \in \p$.
-  For $C \not\in \p$, $\pancsof{C}{\p} = \pancsof{A}{\p}$,
+  Trivial for $C \in \py$.
+  For $C \not\in \py$, $\pancsof{C}{\py} = \pancsof{A}{\py}$,
   so Unique Tips of $A$ suffices.
 }