From 8f443ec01dff14b55f840de1c8bd080c96394e98 Mon Sep 17 00:00:00 2001
From: Ralf Jung <jung@mpi-sws.org>
Date: Fri, 14 Jun 2019 15:51:54 +0200
Subject: [PATCH] temporary link to prophecy MR, until we can reference a paper
 instead

---
 docs/language.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/language.tex b/docs/language.tex
index 06eb99c88..88c6e9275 100644
--- a/docs/language.tex
+++ b/docs/language.tex
@@ -1,7 +1,7 @@
 \section{Language}
 \label{sec:language}
 
-A \emph{language} $\Lang$ consists of a set \Expr{} of \emph{expressions} (metavariable $\expr$), a set \Val{} of \emph{values} (metavariable $\val$), a set $\Obs$ of \emph{observations} (or ``observable events'') and a set $\State$ of \emph{states} (metavariable $\state$) such that
+A \emph{language} $\Lang$ consists of a set \Expr{} of \emph{expressions} (metavariable $\expr$), a set \Val{} of \emph{values} (metavariable $\val$), a set $\Obs$ of \emph{observations}\footnote{See \url{https://gitlab.mpi-sws.org/iris/iris/merge_requests/173} for how observations are useful to encode prophecy variables.} (or ``observable events'') and a set $\State$ of \emph{states} (metavariable $\state$) such that
 \begin{itemize}[itemsep=0pt]
 \item There exist functions $\ofval : \Val \to \Expr$ and $\toval : \Expr \pfn \Val$ (notice the latter is partial), such that
 \begin{mathpar}
-- 
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