randform

In my last posts I was metaphoring about iterations/recursions and fractals.

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Also if my recent obsession about nested polygons, nested documenting and nested exhibitions gets may be a bit boring and nerving (this is why iterations are nowadays done by a computer) – this post here is a short report about a foto report about an exhibition about which I was reporting in this randform exposition which was about online exhibitions in real exhibition spaces.

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One difficulty with displaying (mainly) conceptional works is that a lot of these works have no full and immediate sensory output – especially those with not many interactive and performative ingredients. In other words: it is hard to see an idea/imagination/thought if it is represented only in a few images/ sound/ narratives/ descriptions etc.

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A possible random Delaunay triangulation (screenshot from the applet)

Just a link to an instructive applet on Voronoi diagrams and Delaunay triangulations as appearing in computational geometry.

From the site:

• The Voronoi Diagram has the property that for each site (clicked with the mouse) every point in the region around that site is closer to that site than to any of the other sites.
• The Delaunay Triangulation is the geometric dual of the Voronoi Diagram. Alternately, it can be defined as a triangulation of the sites with the additional property that for each triangle of the triangulation, the circumcircle of that triangle is empty of all other sites.

In the above applet the user can switch between the two constructions.

->Another Delaunay triangulation application (java webstart) from Markus.

again some lego math visualization (more…)

Just a short link to a symposium organized by the European Science Foundation on Biological Surfaces and Interfaces.

This 3rd conference on Biological Surfaces and Interfaces addresses the field of interfaces between synthetic materials and biological systems – biointerfaces – a topic that constitutes one of the most dynamic and expanding field in science and technology.

Links of interest on that site:

• 51st Biophysical Society Annual Meeting, Baltimore, USA, 3-7 March 2007
• Biomaterials Network
• ICIAM07- 6th International Congress on Industrial & Applied Mathematics, Zurich, CH, 16-20 July 2007

for viewing the applet you need Java 1.5 or higher, please wait for the blue star.

• left click and drag – rotate
• middle mouse and drag – translate
• ctrl middle mouse and drag – zoom
• e – encompass

Today the DMV (german mathematician comunity) awards their media prizes to journalists for special archivements in communicating mathematics in the public. Besides the media prize (4000 euros) for George Szpiro (Jerusalem) and the journalists prize (1000 euros) for Ulf von Rauchhaupt (Frankfurt) a very special honor is given to Hans Magnus Enzensberger: The implicit surface given by the above equation was named after him.
Details about the prizes the winners and the ceremony here, an image of the surface from the press release here.

I finally managed to translate my article for the conference proceedings of the NMI2006 conference from german into english. There are a few additions, which are not included in the german version.

The article is a description of our installation seidesein. It gives an account on our motivations for creating seidesein but it explains a bit also our motivation for other daytar works.

The article is for download >>here or directly via the seidesein page.

I am very grateful for any feedback on this article.

Hundreds of approximately 3 inch stoneballs have been found in Scotland. (more…)

Today I am digging out a historical milestone in mathematical visualization.

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