Alexander Kurz
Home-educating parent, Professor of Computer Science at Chapman University
Formerly University of Leicester, CWI Amsterdam, Masaryk University Brno, LMU Munich
Google Scholar, dblp

Random Quote:

In early 2021, the University of Leicester threatened with redundancy some of the best mathematicians and computer scientists I know, former colleagues of mine. By the end of the academic year, if I counted correctly, 16 academics in mathematics and computer science either left their job “voluntarily” or were made redundant … more.

Both natural and programming languages are recursive. In German also words are recursive, for example, we can make words such Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz. There is no longest word in German, much as there is no longest sentence in English. Btw, there is an interesting debate about whether Piraha is a language in which the length of sentences is also bounded (but the lengths of stories would still be unbounded).

If we want to survive on this planet, we need to respect planetary boundaries and transition to a sustainable economy. To achieve this, we need to get away from the idea that a good economy is a growing economy. Growth is not sustainable in the long run. An average growth of 2% per year equals growth of 724% over 100 years and of 1,995,657% over 500 years. Much more on this is in Dasgupta’s Review on The Economics of Biodiversity and in the IPBES Global Assessment Report on Biodiversity and Ecosystem Services.

En-ROADS climate policy simulations


Chapman University Engineering Seminars
PhD students


Programming Languages (Fall 2021)
Compiler Construction (Spring 2021)
A short course on automata and Haskell
A short course on monads in mathematics and Haskell (ongoing, under construction)
Student Projects
Postgraduate teaching

Chapman and Friends Online Chess Tournaments

<– Governor Newsome finally finds clear words (Sep 11). Since then we are having wildfires for the third time this season in Orange County. Pictures.

Otherwise, climate change is not really a topic in these elections. Why? There are many reasons: that Merchants of Doubts are undermining the trust in science, that Our democracy no longer represents the people, that the fossil fuel industry dominates politics, that the mainstream media are biased towards climate change deniers, the rise of corporate power.

But, in fact, keeping the fossil fuels in the ground is not enough, what we really should debate is how to achieve a sustainable economy. There are many new ideas … but I don’t hear people talking about it.

The carbon clock below shows how much time we have left if we want to limit CO2 in the atmosphere to a value compatible with 1.5, respecticely 2.0, degree Celsius warming compared to pre-industrial levels.

See climate change with your own eyes. The longer we wait, the higher the costs. Or is there no action because we have already given up?


Predatory Publishers
How to make the simplest possible webpage

Comments? Send an email to akurz at chapman dot edu.