
Speeltuin van de wiskunde
Veen Magazines 2003, Fourth printing
Editors: Jaap Top, Bart de Smit
Collection of articles in Dutch
at the level of junior college
Complete content online since 2011


For the IMO 2011 here are
the 6 problems [PDF]
with answers, that the jury chose from the
shortlist
[PDF].


Escher and the Droste effect is a project of
Hendrik Lenstra and Bart de Smit that filled the mysterious hole in Escher's lithograph
Print Gallery
 article for mathematicians
 MAA distinguished lecture 2011
 chapter in Dutch [PDF] in the book above
 De wiskunde achter escher


The ABC conjecture is a major
open research problem that can be formulated at high school level.
 Reken mee met ABC

radio interview
[mp3, Dutch]
 paper in Dutch [PDF]
and update.
 BOINC project [abcathome.com]


More examples of the Droste effect, changing images by
conformal mappings, and the complex exponential map
are in a
paper [PDF] for
Bridges conference 2005 in Banff
  During the event
Pi in de Pieterskerk
a memorial stone for the 16th century mathematician Ludolph van Ceulen was
revealed by the Dutch Crown Prince.

Picture that
appeared in Science.

Pi in de pers [PDF]

Radio interview [mp3, Dutch] with the letter cutter
 papers by several authors:
pdf
pdf
pdf
pdf


Van Gogh meets Riemann [PDF]: a visualization
of the Riemann zeta function. Also available as animation [13M, MPEG1],
where the pole is a sink, and the zeros are sources.
 
