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…
„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…
Restart
This is a restart of my old blog about mathematics. The reasons for the restart were that on Strato the old installation did not support PHP 8.0 and Strato does…