Rado Kirov
banner
radokirov.bsky.social
Rado Kirov
@radokirov.bsky.social
engineering at stripe. recovering academic.
Falling in an odd rabbit-hole of visualizing logical deductions.

Why isn't there a mobile friendly game for proving the ~100 core theorems of propositional and first-order logic?

[1] incredible.pm
[2] www.winterdrache.de/freeware/dom...
[3] www.jfsowa.com/peirce/ms514...
The Incredible Proof Machine
incredible.pm
November 8, 2025 at 10:07 PM
AI boosts productivity until a breaking point where domain expertise becomes unnecessary (coding, formalizing math, etc.) - you can go straight from idea to implementation without interaction with the underlying tool. Some are betting that arrives soon enough that they don’t invest in learning.
November 2, 2025 at 1:12 AM
You can’t convince me Russell wouldn’t have used Lean if he had a chance.
October 27, 2025 at 5:28 AM
Calling Bay Area math enthusiasts interested in weekly sessions doing rigorous foundational mathematics the modern way - with computer-verified proofs in Lean.

(An experiment in rigorous math education outside traditional academia)
September 24, 2025 at 5:05 AM
Newest installment in my journey of learning how to do math proofs with computers rkirov.github.io/posts/lean4/.
Learning Lean: Part 4
It’s been 3 months since my previous post about learning Lean part 3, so it’s time to write another one. I have mostly continued to work through Tao’s Analysis book through his excellent companion - w...
rkirov.github.io
September 22, 2025 at 6:22 AM
The more I learn about logic, it dawns on me that math is sloppy about syntax (“by abuse of notation”), while software engineering is sloppy about semantics (“the purpose of a system is what it does”) and only when analyzing logical systems their interplay is explored.
August 29, 2025 at 4:23 AM
Ironic that in logic "model" is the thing imbued with meaning (contrasting the syntactic meaningless moving of symbols around), while in ML "model" is the meaningless (but useful) pile of bits, while the "real world" which the ML model models is where the meaning is.
August 28, 2025 at 4:32 PM
Reposted by Rado Kirov
We're excited to share the Lean FRO Year 3 Roadmap today! It builds on work completed in the first two years of Lean FRO operations and will guide all #LeanLang development through July 2026.

➡️ Read the roadmap at lean-lang.org/fro/

#LeanProver #FormalMathematics #FormalVerification
Lean Programming Language
Lean is a theorem prover and programming language that enables correct, maintainable, and formally verified code.
lean-lang.org
August 5, 2025 at 3:06 PM
New blog post on my learning formal mathematics with Lean journey - rkirov.github.io/posts/lean3/
Learning Lean: Part 3
I am continuing to learn Lean (see part 1 and part 2). I lost some steam around March-April, but in the last two months I picked it up again. In a way it was a nice spaced repetition for relearning so...
rkirov.github.io
August 11, 2025 at 2:25 AM
New blog post - learning how to use a dependently typed language Lean4 to write formally verified math proof rkirov.github.io/posts/lean1/
Learning Lean: Part 1
Motivation I’ve been captivated by the recent movement to popularize mathematics formalization through the Lean theorem prover, and this year I’m diving deeper into learning it. For those unfamiliar w...
rkirov.github.io
February 18, 2025 at 3:37 AM
Reflections on using Cursor for a simple, but non-trivial coding task - analysis the board game Ticket to Ride: First Journey
rkirov.github.io/posts/ticket/
Ticket to Ride: First Journey simulation authored with AI
Ticket to Ride: First Journey simulation authored with AI After playing Ticket to Ride: First Journey with my family recently, I got the urge to analyze some statistical properties of the game. This s...
rkirov.github.io
January 30, 2025 at 4:57 AM
If you are looking for puzzle game recommendations, read about the ones that I played and enjoyed in 2024 - rkirov.github.io/posts/puzzle...
Puzzles2024
Puzzle games of 2024 As the year draws to a close, I want to share my favorite puzzle games from 2024. This isn’t meant to be an exhaustive review or ranking of all puzzle games released this year, bu...
rkirov.github.io
January 1, 2025 at 7:33 AM