diff --git a/report.tex b/report.tex
index 18c293f..43d87de 100644
--- a/report.tex
+++ b/report.tex
@@ -821,6 +821,7 @@ $}
     \end{aligned}
     $}
     \]
+    where $c_1$, $c_2$, $c_3$ and $c_4$ are positive constants that large enough (the lower bound can be calculated).
   \end{frame}
 
   \begin{frame}{References}