Chris Henson
@_chenson__
CS PhD student @DrexelCCI working on categorical semantics in Lean. Collector of retro computers and vintage books. Formerly Quant Finance at Bank of America.
I figured my math followers would especially appreciate this! Just got these, they are originals from 1740 and 1751. Include the original publication of Euler's solution to the Basel problem, among other very cool things. So crazy to have these pieces of history on my bookshelf.
My article on the "Formalization of derived categories in Lean/mathlib" is the first article afm.episciences.org/15978 in the first volume of the brand new journal Annals of Formalized Mathematics.
The first volume of the new Open Access journal "Annals of Formalized Mathematics" was released today! ➡️afm.episciences.org/volume/view/id… #FormalMath #Mathematics #OpenAccess
I wrote a short blog post "The Interplay Between Metaprogramming and Computation in Lean": chrishenson.net/posts/2025-06-…
Another award that is announced at PLDI is the SIGPLAN Programming Languages Software Award. This year, the award was received by the LEAN theorem prover (@leanprover), which has had and continues to have broad impact on mathematics, hardware and software verification, and AI!
Our paper Multi-Stage Programming with Splice Variables, co-authored with @xnningxie, has been accepted to ICFP'25 😀! We designed a language for flexible, type-safe code generation, with advanced features like code pattern matching — enabled by what we call splice variables.
I declare every CPU instruction is now a microservice (because they are really tiny, right?). All computing ceases to be possible, and the world heals.
Resilience math: If your system depends on 10 microservices that all have 99.9 uptime, your total uptime will only be 99.0. Literally 10x worse (88h v 8h downtime pr year).
people have wildly different interpretations of the same words; it’s honestly amazing that we manage to communicate anything at all with each other