diff --git a/rapport/chapter3-structure-detection.tex b/rapport/chapter3-structure-detection.tex
index 15d1f0a..0f6f8c7 100644
--- a/rapport/chapter3-structure-detection.tex
+++ b/rapport/chapter3-structure-detection.tex
@@ -3,7 +3,8 @@
 \section{Definition of a collection}
 \label{sec:definition-of-a-collection}
 
-We define a collection of bipartite networks as $\bm{X} = (X^1, \dots, X^M)$
+We define a collection of bipartite networks as
+$\bm{X} = (X^1,\dots X^m,\dots, X^M)$
 the collection of incidence matrix. Moreover, all the networks in the
 collection have the same type of interaction (e.g., all interactions are
 binary).
diff --git a/rapport/rapport.pdf b/rapport/rapport.pdf
index fa59792..33aeec0 100644
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