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Codex vs Claude These days I'm comparing Codex and Claude. Actually, two sheets in the previous post were made with different models. Can you guess which one was made by which model?

Հոլ I bought an Armenian spinning top - Հոլ. You throw it, pull the string, and it starts to spin. There is an interesting idea here from the physics point of view: the string starts unwinding when the radius is still bi

Friday shitposting Sometimes you say "Thanks, Cap" as if stating the obvious is a bad thing. But in our fast-paced reality, maybe it's exactly the anchor that keeps us afloat. (pun intended)

The Water Tower [Earlier](<https://t.me/phys_math_dev/106>) I mentioned my old project: a water tower from an ancient DIY pioneer book, which turns 60 years old this year. I decided that [the pyramids](<https://t.me/phys

Manacher superpowers These days you are either getting work done or keeping up with contemporary technologies - rarely both. You know, we are living in a strange time. There is an information bubble around agentic progra

Agentic Programming - navigation There are fans and haters of LLMs and agents. I'm neither. I'm just working with these tools, much like I used to work with programming languages and other tools. Little by little, this c

3D-printed Dragon Curve Once I stumbled upon a big glass box in the middle of the App in the Air office. I asked, "What is it?" Turned out it was a 3D printer. An expensive one. I didn't get a believable answer about wha

5. [Longest Palindromic Substring](<https://leetcode.com/problems/longest-palindromic-substring/>) My friend is solving some LeetCode problems now, and I couldn't help but join him. I know, I know... LeetCode is dead, al

The simplest cacti sort At the last moment I got a request to write the smallest possible program which sorts cacti in The Farmer Was Replaced game. Here is my version: ```python n = 8 set_world_size(n) disorder_detected

Implicit Curriculum aka skill graph Why should I read all these articles? - I asked myself this week, when I suddenly found [this diamond](<https://arxiv.org/pdf/2604.08510>). To explain why I jumped out of my chair, let

Friday trash Be careful, the first photo is really a kind of trash. 100 kilometers north of Moscow, kids are playing with a dead snake. If your toys were wooden, you were lucky. Near Zvenigorod there is a bunch of identi

I got some feedback Please don't hesitate to write comments and react to posts. It's my fuel. This small message of support really means a lot to me.

[« prev](<https://t.me/phys_math_dev/244>) | [content](<https://t.me/phys_math_dev/213>) Reading list. Part 2. 👉 [Andrews, Askey, Roy — Special Functions](<https://books.google.com/books/about/Special_Functions.html?id=k

A reading list on Gaussian binomial coefficients, q-binomial coefficients, and their connection to stochastic AUROC [« prev](<https://t.me/phys_math_dev/233>) | [content](<https://t.me/phys_math_dev/213>) | [next »](<htt

Friday challenge ✨ Can you guess how these ice cubes started glowing? Share your theories in the comments.

Geometric proof of an algebraic formula In a friendly chat I saw an idea for a nice toy. It's a well-known thing, and you can check the [post](<https://t.me/geometrykanal/363>) with a magnificent picture, and a beautiful

Self-portrait To generate such a magnificent picture, say: "Redraw my photo in MS Paint style, with some likeness, but also off in a confusing way..." I'll try to write about myself under a similar prompt. The beginning

Sorry for the pause in posts. Over the holidays I read the whole new Pelevin book and analyzed Pearson-friendly institutions. Also, my daily work project buried me under a lot of hands-on tasks. Please help me decide wha

Friday shitposting. My own photos. The first one demonstrates that it is not always a good idea to show users a randomly generated sequence of letters. The second... Basically, I have no clue. Probably a secret training

Hardcore. Stochastic wandering. [« prev](<https://t.me/phys_math_dev/232>) | [content](<https://t.me/phys_math_dev/213>) | [next »](<https://t.me/phys_math_dev/244>) My own investigation When I started all this commotion