published on: 2014-03-28 15:51:27
illacerva: Bang bang. You shot me down. Bang bang
joelsr23.tumblr.com/post/80980761052/
joelsr23.tumblr.com/post/80980788568/
joelsr23.tumblr.com/post/80980792847/
hyrodium: The proof of Sum of Square Numbers!
hyrodium: Hyperbolic paraboloid and One sheet of hyperboloid.