Illustrating lecture notes with TikZ, I needed to draw a curve fulfilling certain conditions. Had to come up with an equation - then change parameters manually until it looked ok - kind of.

Is there no tool for this? Draw a curve (with mouse, tablet or fingers), then let the computer find one or more equations that fit it reasonably, e.g. by genetic algorithm. There is literature about it - but no implementation or app?

Could this be an idea for a start-up? Who wants something like that, too?

Research job offer - might be considered an advertisement.

Slightly off topic, but I am looking for a 2 year PostDoc in Structural Design and Optimization of a Novel Wind Turbine Concept. If you know what SQP means and what a Gaussian Process is, and are interested in wind energy - please have a look! Even better if you know some structural analysis and the finite element method.

Should start around January 2022, but not much later.

https://euraxess.ec.europa.eu/jobs/682125

#postdocposition #windenergy

Mathematics book quiz of the month

Bought this book recently and just opened it at two random pages. Wow! A mathematical explanation for how the wind creates waves? And a discussion of waves with negative energy? This is super interesting. I know what I will spend the next weeks with!

So, which mathematical textbook is this?

Hint: The editor of the book series quotes Heaviside in his preface: "The series is divergent; therefore we may be able to do something with it."

Sometimes it's wonderful to do something useful away from the blackboard - analytical skills can be applied very broadly!

After months of acting up, the dishwasher (an old IKEA one) finally stopped working. Luckily my brother-in-law was in town and likes to tinker. We opened it up, cleaned a sensor (indicated in red), replaced a seal, and it works again! All without any training, just some respect for electricity. Three hours of fun avoided 35 kg waste and saved 1000 Euro.

Health-related (COVID19). Discusses ethical problems and could be considered political.

This is somewhat off-topic (although there is a lot that could be said about the mathematics of COVID19 as well - maybe at a later time?).

Just posted some personal thoughts about getting vaccinated for COVID19 on my blog, as I needed to clarify that decision for myself and for some close ones. Might help someone else with their own decision(s)?

Blog post: https://folk.ntnu.no/muskulus/blog/vaccines/

Just discovered "Mathematics Made Difficult" (https://math.stackexchange.com/questions/1828660/what-are-the-prerequsites-for-this-book). It's a bit silly. But the potential!

"Simplicity is relative.To the great majority of mankind - mathematical ignoramuses - it is a simple fact, e.g., that 17x17=289, and a complicated one that in a principal ideal ring a finite subset of a set E suffices to generate the ideal generated by E. For the reader [...] the reverse is the case [...] Thus, the title of this book might equally well have been Mathematics Made Simple"

Some thoughts on copyright when working in science and mathematics.

Hei!

I live in a quiet Norwegian town, trying to be a mathematician. My aim is to write more, to climb every (other) day, and to get better at woodworking.

There is a mathematical problem I work on since 10+ years, but I will not tell you which. Well, my profile pic tells a story, kind of..

I have about π meters of mathematical monographs and textbooks that I still want to read in this life and a busy job - so be patient with me!

I live in a quiet Norwegian town, trying to be a mathematician. My aim is to write more, to climb every (other) day, and to get better at woodworking.

I have about π meters of mathematical monographs and textbooks that I still want to read in this life and a busy job - so be patient with me!

Blog: https://folk.ntnu.no/muskulus/blog/

Interested in combinatorics, stochastic dynamics, optimal transport, Julia, the game of Go, climbing, woodworking, Japanese

Joined Mar 2021