Professor, Dr. of Engineering (to my Japanese homepage)
The roof of a garage and its mirror image appear to be quite different. The human brain likes to interpret the edge of the roof as a planar cut perpendicular to the axis of the roof, but actually ...
Meiji Institute for Advanced Study of Mathematical Sciences
Organization for the Strategic Coordination of Research and Intellectual Property
4-21-1 Nakano, Nakano-ku, Tokyo 164-8525, Japan