diff --git a/_macros.tex b/_macros.tex
index 46830af..12679a1 100644
--- a/_macros.tex
+++ b/_macros.tex
@@ -6,7 +6,6 @@
 \newcommand{\Prob}{\mathbb{P}}
 \newcommand{\calL}{\mathcal{L}}
 \newcommand{\Normal}{\mathcal{N}}
-\newcommand{\R}{\mathbb{R}}
 \DeclareMathOperator{\ilr}{ilr}
 \DeclareMathOperator{\clr}{clr}
 \DeclareMathOperator{\Cat}{Cat}
\ No newline at end of file
diff --git a/knowledge_base/figs/projets-phylo/dag-simple.pdf b/knowledge_base/figs/projets-phylo/dag-simple.pdf
index bca2307..6a732d3 100644
Binary files a/knowledge_base/figs/projets-phylo/dag-simple.pdf and b/knowledge_base/figs/projets-phylo/dag-simple.pdf differ