Top all-time · #9357
Blueberry Wren Thoughts
Personal blog · blueberrywren.dev/blogprogrammingmath
Blueberry Wren Thoughts is a personal blog at blueberrywren.dev about programming and math. Since 2025, 8 different Hacker News readers have linked it 11 times, most often “A tale of four theorem provers”. It is still writing: the last post was on 2026-10-10, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
Linked for a post on formal verification comparing theorem provers: Lean and Agda as dependent-type systems versus Isabelle/HOL and HOL4 as LCF-style systems. Shared in a thread about Lean and AI.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- A tale of four theorem provers4 people · 4 mentions · first linked 2026-10-09
- Zig and the design choices within3 people · 3 mentions · first linked 2025-10-15
What Hacker News says?
Nice article, here is the direct link since no one commented on the HN post. A tale of four theorem provers - https://blueberrywren.dev/blog/primes/ > Broadly speaking, both Lean and Agda are dependent-types based systems, utilizing the Curry-Howard correspondence to prove theorems via a complex type system, whereas Isabelle/HOL and HOL4 are LCF-style systems, with a small "proof kernel" containing base rules (e.g.…
Comment linking /blog/primes/
on “AI, Lean, and the Future of Formal Verification, with Lean Creator Leo de Moura”Submitted De Bruijn notation, and why it's useful as a story · 141 points
HN discussionSubmitted Zig and the design choices within as a story · 129 points
HN discussionSubmitted Opinion Piece: On Zig as a story · 18 points
HN discussionSubmitted A tale of four theorem provers as a story · 7 points
HN discussionSubmitted Crafting a dependent typechecker, part 1 as a story · 7 points
HN discussionSubmitted Opinion piece: On Zig (and the design choices within) as a story · 6 points
HN discussionSubmitted Comparison of Isabelle/HOL, Lean, HOL4, and Agda: A Tale of Four Theorem Provers as a story · 5 points
HN discussionSubmitted A (Reasonably) Opinionated Comparison of Isabelle/HOL, Lean, HOL4, and Agda as a story · 2 points
HN discussionSubmitted Type Safe Interpreters as a story · 1 points
HN discussionSubmitted Horrible answers to "What is a type?" as a story · 1 points
HN discussion