This is actually not anyone's home page!
Hey, what is
(or, if you prefer, this) anyway?
There is a famous painting of the surrealist
René Magritte with the title
"Ceci n'est pas une pipe". You guess what you can see on the painting?
I'll find a link to a place where the picture is shown and put it here...
FSP Mathematisierung | Faculty of Mathematics | University of Bielefeld