diff --git a/.gitignore b/.gitignore
index 9d1cdf0..cc82dc2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -89,7 +89,7 @@ sympy-plots-for-*.tex/
 *.xdy
 
 # final document
-main.pdf
+# main.pdf
 
 # Emacs autosaves
 .#*
\ No newline at end of file
diff --git a/main.pdf b/main.pdf
new file mode 100644
index 0000000..c094ef0
Binary files /dev/null and b/main.pdf differ