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-rw-r--r--buch/chapters/60-gruppen/lie-algebren.tex2
1 files changed, 1 insertions, 1 deletions
diff --git a/buch/chapters/60-gruppen/lie-algebren.tex b/buch/chapters/60-gruppen/lie-algebren.tex
index 6c6b74b..366d280 100644
--- a/buch/chapters/60-gruppen/lie-algebren.tex
+++ b/buch/chapters/60-gruppen/lie-algebren.tex
@@ -118,7 +118,7 @@ D_\alpha
&=
\sum_{k=0}^\infty \frac{(J\alpha)^k}{k!}
=
-\biggl(
+I\biggl(
1-\frac{\alpha^2}{2!} + \frac{\alpha^4}{4!} -\frac{\alpha^6}{6!}+\dots
\biggr)
+