randform

I am a bit slow these days, but here comes the summary of the NMI 07 of Thursday June 28, Section D+E

(more…)

My class mate wants me again to publish a short story in german for her creative writing class.

(more…)

Since I don’t have a mobile phone blogging tool or even a laptop I couldn’t life blog from the NMI conference at the academy of sciences. So here comes a little summary about the topics and speakers of last Wednesday.

(more…)

I just saw that folksinger Joan Baez is singing in the Zitadelle Spandau today (tickets). Unfortunately I won’t be there.* However I would like to say at this place that I wish Joan Baez wouldn’t need to sing on such occasions as on a concert of the operation cease fire.

Another remark: the Zitadelle Spandau as being a former fortress of the 16th century is also not such a pleasant location but the more it is important that there are nice concerts.

->Joan Baez singing the answer is blowing in the wind

*addendum: I actually managed to go to the concert and arrived there in the last minute. She sang very nicely about strange stories. Interestingly the core of a folk music concert (it was my first folk music concert) seems to be that the audience sometimes forms a choir. After the “more” some more images which are sometimes a bit blurry, since my camera is not so lightsensitive.

(more…)

Today is “Lange Nacht der Wissenschaften” in Berlin.
The math group at TU Berlin displays their 3d virtual theatre, virtual reality applications in mathematics, a 3d printer, and much more.

My classmate needs again to publish a short story for her class (in german). Just ignore this post.

(more…)

A remarkable mathematical conjecture (proven 1995 by Sabitov) is that there exists no rigid bellows. This means if you have a closed volume which is formed by (triangle shaped) “plates” and if you deform it then the volume stays always constant (i.e. if it would have been a bellows then you couldnt press air out of it). This is why accordions need some elastic fabric in order to allow for deformation. May be also a useful knowledge for architecture, since it means that if you press a (closed) house on one side it would bulb on some other side.

The workshop Rigidity and polyhedral combinatorics is discussing related problems.

The above image is a jack-in-the-box randform birthday cake. Just watch the image for a few seconds.

(more…)

There are artistic techniques, which I don’t feel like practising myself, but which are important to know about, like e.g. the technique of Blaudruck. I went to a museum, where they displayed the technique, I may even buy a book about it.

(more…)

(more…)