A group of Mathematicians
at the University of Leiden in the Netherlands has solved a puzzle in
one of the pictures of Escher.
Click here for
getting to the website of that group. The flash movies below were
produced using movies found on that page.
Each time frame of the movie is obtained by applying a linear transformation on
the picture. The first animationis a simple scaling transformation,
the next is a combination of a rotation and scaling (in suitable coordinates).
This is called a rotation dilation. For details on how the rotationdilation
is implemented, visit the
website.
