diff --git a/.gitignore b/.gitignore
index e4176a1..3cffb18 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,10 +19,10 @@
 # these rules might exclude image files for figures etc.
 # *.ps
 # *.eps
-*.pdf
+#*.pdf
 
 ## Generated if empty string is given at "Please type another file name for output:"
-*.pdf
+#*.pdf
 
 ## Bibliography auxiliary files (bibtex/biblatex/biber):
 *.bbl
diff --git a/graphE/graphE.pdf b/graphE/graphE.pdf
new file mode 100644
index 0000000..87e2760
Binary files /dev/null and b/graphE/graphE.pdf differ