Archive for the 'math' Category

Latexaccess and Reformvorschläge in der Sozialversicherung

Tuesday, September 25th, 2012

Some time ago randform had a blogpost on the mathematical typesetting software LaTeX, however we sofar had not installed LaTeX. On one hand this was due to the fact that until somewhat recently it would have been necessary to install LaTeX on our server for that purpose. Moreover there was sofar no big need to have LaTeX here, because randform hasn’t sofar used too many math formulas. With the tool MathJax, which is offered as a WordPress plugin and with in particular the MathJax possibility to link to a javascript library (which considerably reduces serverspace) we now test the possibility to typeset LaTeX on this blog.

So here as the first typesetting experiment with MathJax: the formula for the suggested function in the petition “Reformvorschläge in der Sozialversicherung”

\( f(t) := (0.012 t)^{\frac{1}{2.4}} e^{0.0022 t} \)

sideremark: A search with keyword “LaTeX” on, a website which is offering the possibility to launch petitions, which are not allowed on the official petition website of the german parliament (like the above petition) offered just some Google ads with the typical offers you get when you type in latex.

Reformvorschläge in der Sozialversicherung Infographik

Thursday, July 19th, 2012

After the click some infographics which illustrate the german Reformvorschläge (in german).

where has all the money gone ?

Saturday, July 7th, 2012

Views on various deposit mountains or the expansion of $100 through fractional-reserve lending at varying rates, under the re-lending model. Each curve approaches a limit. This limit is the value that the money multiplier calculates (diagram from wikipedia)


Happy holidays

Friday, December 30th, 2011

“verticalized overhead power line with book lover using excessive light”, fotography of the Sony Center court yard on Potsdamer Platz by Loretta (see also the randform post chains)

I was recently looking a bit into the issue of smart grids and ran over an interesting european strategy analysis.

In 2005 the european smartgrid platform was set up. On their document page the currently newest document linked to is from 2010, it is a Strategic Deployment Document for Europe’s electricity networks of the future (2010) on page 53 one finds:

Engineering in the energy sector, electricity grids in particular, is seen by many as old- fashioned and “difficult” as it requires a high level of competence in mathematics, physics and other sciences. This discourages the potential new students from studying and pursuing a career in power engineering.

… and

All stakeholders in the electricity sector have a responsibility to improve the image of the sector, e.g. by engaging with educational institutions and explaining in an understandable way the real benefits of being involved with and able to deliver solutions to the energy, climate and environmental challenges of today.

This sounds very much as if the major problem of getting new working force for the electricity high-tech sector is mainly a question of hipness. In part it may be true that science and math is regarded as highly “unhip” in certain circles (and the reasons for this are manifold), however the comment in the document seems to miss somewhat a crucial point. Or maybe lets say it sounds a bit strange in the view that even fields medallists in e.g. Great Britain or France try to politely point out that there is structurally something at odds with the whole european science and math research and education.

Happy holidays to all randform readers!

supplement 1.1.2012: a happy new year to all randform readers!

Mathematiques – un depaysement soudain

Tuesday, October 25th, 2011

“fractal breakfast at Tiffany’s” , by Rodriguez de la Mär

There seems to be currently an interesting exhibition at Foundation Cartier in Paris called “Mathematiques – un depaysement soudain” (a sudden change of scenery). It is a collaboration between mathematicians and artists. The exhibitions english website says that:

Visitors may continue to experience this “sudden change of scenery” via the exhibition catalog, an iPad application, the Fondation Cartier website, as well as by attending a series of events, the Nights of Uncertainty.

I couldn’t yet figure out how one can “continue the experience via the Fondation Cartier website” that is apart from the above mentioned french exhibition announcement and its english translation there seems sofar not so much more online and the flash plugin crashes regularily. But who knows ? – eventually the plan ist that Fondation Cartier thinks of revamping existing websites related to math and art like e.g. the Voro Wiki?

game talk on open knowledge conference

Wednesday, July 6th, 2011

My talk at the open knowledge confence was well perceived, however on the other hand there were not so many participants listening to my talk. In general it seemed to me that games were not (yet) in the focus of the open knowledge community. That is tere were not so many talks involving games at the conference. Nevertheless there were enough issues of importance and the conference was fun.

The slides of my talk are currently too big for upload, so I only uploaded a newer version of the article.

update (130711): The slides are available now at

Talk: “Testing new toy economies/political structures in MMOGs” at

Miss Maple

Saturday, July 2nd, 2011

A recent product description at Inhabitat. Read about: Miss Maple – the pendant lamp by Elisa Strozyk and the tile-tale of cozy Sherlock Home.

Open knowledge

Wednesday, June 29th, 2011

Short notice: I am giving a talk on contents of the game scheme article and the scientific platform article on July 1st at the open knoledge conference in Berlin.


Thursday, May 26th, 2011

An upload of an updated version of the article draft “New economic schemes in games” is at the corresponding randform blogpost.

New economic schemes in games

Friday, March 25th, 2011

In the blogpost on the return of investments I proposed to use games for testing new economical scenarious. I currently try to make an article out of that.
In the draft I sofar have given an overview about games and roughly motivated why I think that it may be a good idea to introduce new economical schemes. In particular I talk about the limitations of this planet, design and in particular about something that I dubbed “recycling-run-away effect”.

Amongst others I also try to line out why I think that the nuclear waste problem may be a worse problem than the safety of reactors (see also the first post on Fukushima).

Comments are appreciated, here is the draft:
update (06072015) :
It currently looks as if an article format is rather not suited for the writings and findings made within the context of the game draft article. It is also still not clear wether this project will ever be finished and if in which form. You may though still find on and off some informations in this context, likethis blog post is an example.

update (06072011) : This blog post is now used as a referrer URL for the game scheme article, thus newer versions of the article and comments will be uploaded more or less regularily. Please note that this offer to our randform readers costs our private money. Since randform is currently purely financed by Tim Hoffmanns income as a math professor, we may eventually be forced to reduce or close this offer, depending on download rate, inflation, etc. Most of the content of the article is also spread on the Azimuth project like the section about the Game environment. The Azimuth updates are usually more current.

->version July 06, 2011

The most essential content article of the article was presented on July 1st at the open knowledge conference 2011 in Berlin:

Talk: “Testing new toy economies/political structures in MMOGs” at

older versions of the article:

->version May 25, 2011

->version april 26, 2011

-> New economical schemes in games, version march 25, 2011