Googling moon nazis lead me to some answers. Although perhaps not mathematical proof:
"The Nazis set up a secret base on the dark side of the moon in 1945 where they hide out and plan to return to power in 2018."
(
http://m.imdb.com/title/tt1034314/ )
I'm not sure I need a more convincing proof than that. If you're not 100% ready for them then you might as well make your wallet password "hitler69" and put it on Dropbox.