A Little bit of Duplo-Mathematics
admin This construction works without stretching or bending. Everything is sitting exactly on the studs. Here is a mathematical abstraction of the situation. This has been observed by a friend who…
Java-Kurs – Modernisierung
Ich habe meinen Java-Kurs modernisiert. Die erste Version entstand ja kurz nach dem Erscheinen von brauchbaren Java-Versionen. Es war dringend nötig, moderne Techniken genauer zu erklären. Insbesondere wird kein AWT…
„Restricted Choice“ in Bridge
The principle of "restricted choice" in the card game Bridge made it to Wikipedia. The article is somewhat mysterious, however, and obscures what is really happening. I never infer with…
The Two Envelopes Problem
This problem is at least half a century old, and most likely a lot older. It can be found in a 1953 book by Maurice Kraitchik which is the oldest…
Another nice Math Problem
Published in the old blog in 1022/08/16 I recently got recommended a YouTube video by MindYourDecisions with the following problem: Which number doubles when the last digit becomes the first…
ChatGPB Babble
I asked ChatGPT to give a proof of the Theorem of Pythagoras. Here is what it came up with. The Pythagorean Theorem states that in a right triangle, the square…
Problems with Infinity
Another old blog entry, again about the foundations of math. I recently came across one of the many videos on Youtube dealing with the problem of infinity. At the end…
The Ethics of AI
I wrote this text for the old blog some years ago. The topic of AI and its ethics is now even more urgent. So, I repeat the text in the…
Corona – Revisited
Dieser Beitrag ist von 2021, also von vor 2 Jahren. Für mich ist das Lesen dieses alten Textes ein Test, ob ich ihn heute noch genauso schreiben würde. Ich denke…
EMT – Simulation of the Two Child Problem
The two-child problem is a problem in probability theory with a solution that seems paradox on first sight. I wrote about that problem before. Let me repeat the explanation and…