Add guard elim rule

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/manual.tex b/doc/manual.tex
index 0038d3b1..abce0c44 100644
--- a/doc/manual.tex
+++ b/doc/manual.tex
@@ -665,6 +665,10 @@ $$\infer{\Gamma \vdash \lambda [c_1 \sim c_2] \Rightarrow e : \lambda [c_1 \sim
   \Gamma \vdash c_1 :: \{\kappa\}
   & \Gamma \vdash c_2 :: \{\kappa'\}
   & \Gamma, c_1 \sim c_2 \vdash e : \tau
+}
+\quad \infer{\Gamma \vdash e \; ! : \tau}{
+  \Gamma \vdash e : [c_1 \sim c_2] \Rightarrow \tau
+  & \Gamma \vdash c_1 \sim c_2
 }$$
 
 \subsection{Pattern Typing}