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Yossi Frenkel
Personal blog · abstractnonsense.xyz/blog · on HN as subsetmathprogramming
Yossi Frenkel writes Abstract Nonsense, a personal blog at abstractnonsense.xyz about math and programming. Since 2025, 4 different Hacker News readers have linked it 13 times, most often “Can a regex match valid card numbers?”. It is still writing: the last post was on 2026-10-09, and you can follow it by feed.
A blog about Mathematics and Computer Science.
Most-linked posts?
- Can a regex match valid card numbers?2 people · 2 mentions · first linked 2025-09-07
What Hacker News says?
I'm writing a toy eigenvalue solver in Rust using the QR algorithm. I didn't intend to, but I recently discovered the Gershgorin Circle Theorem and thought it'd be neat to create an interactive visualisation for my [blog]( https://abstractnonsense.xyz ). I don't like JavaScript, and I've been meaning to learn Rust for a while, so I'm compiling the Rust algorithm to WebAssembly to run in the browser natively! It's be…
Comment linking /
on “Ask HN: What Are You Working On? (December 2025)”Submitted Xteink X4 Pro Review as a story · 6 points
HN discussionI prefer btop over more traditional resource monitor CLI/TUIs as it handles affordances in a more thoughtful and intuitive way (to me, at least - it's definitely a personal preference!). I think it's worth a test drive even just to explore a different sort of interaction mechanism for TUIs. I've written up some thoughts on the design of btop here: https://abstractnonsense.xyz/micro-blog/2025-04-26-btop-of-y...
Comment linking /micro-blog/2025-04-26-btop-of-your-resources/
on “Btop: A better modern alternative of htop with a gamified interface”Submitted Can a regex match valid card numbers? as a story · 4 points
HN discussionShoutout to the [wasm-bindgen]( https://github.com/wasm-bindgen/wasm-bindgen ) maintainers who do an awesome job of allowing Rust to be compiled to WASM smoothly. I built an [eigenvalue solver]( https://abstractnonsense.xyz/blog/2025-12-31-eigenvalue-solv... ) in Rust for an interactive component for my blog, and it was super smooth going. Felt like magic! I've noticed that the binary sizes can blow up a bit by incl…
Comment linking /blog/2025-12-31-eigenvalue-solver-in-rust-for-webassembly/
on “C# now beats Rust on WASM size”Submitted Can a regex match valid credit card numbers? as a story · 3 points
HN discussionA small release notes highlight I whipped up: https://abstractnonsense.xyz/micro-blog/2025-05-29-apache-sp...
Comment linking /micro-blog/2025-05-29-apache-spark-4.0-released/
on “Apache Spark 4.0”Submitted TIL Hyperlinks in terminal emulators as a story · 2 points
HN discussionhttps://abstractnonsense.xyz/ My personal blog, I normally post about maths and computer science. But sometimes random design things, or bits about linguistics and words.
Comment linking /
on “Ask HN: Could you share your personal website here?”Submitted GitHub hijacks and breaks browser search as a story · 2 points
HN discussionLocation: Melbourne, Victoria, Australia Remote: Yes (preferably) Willing to relocate: Yes. Willing to to relocate to England. Technologies: Python. Have also worked with Haskell, C, Prolog, Java, MATLAB, SAS to various degrees of proficiency. Résumé/CV: Please check my LinkedIn from my profile. Email: hello@abstractnonsense.xyz Blog: https://abstractnonsense.xyz . I like to blog about mathematics and computer scien…
Comment linking /
on “Ask HN: Who wants to be hired? (January 2026)”Submitted Better Python path handling with Pathlib and Git as a story · 2 points
HN discussionSubmitted Writing an eigenvalue solver in Rust for WebAssembly as a story · 1 points
HN discussion