diff --git a/inputs/lecture_01.tex b/inputs/lecture_01.tex
index 72d5da4..56c8f4a 100644
--- a/inputs/lecture_01.tex
+++ b/inputs/lecture_01.tex
@@ -28,7 +28,7 @@ i.e.~it is really a topological property.
 \end{example}
 
 Polish spaces behave very nicely.
-We will see that uncountable polish spaces have size $2^{\aleph_0}$.
+We will see that uncountable polish spaces have size $2^{\aleph_0}$. % TODO: mathfrak c for continuum
 There are good notions of big (comeager)
 and small (meager).