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Jesper Cockx
Personal blog · jesper.sikanda.be/postsprogrammingmath
Jesper Cockx's personal blog at jesper.sikanda.be covers programming and math. Since 2019, 5 different Hacker News readers have linked it 6 times, most often “An introduction to property-based testing with QuickCheck”. It is still writing: the last post was on 2026-01-22, and you can follow it by feed.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
Posts on learning proof assistants (Coq, Agda, Lean) and proof writing style. Comments point to a literate Agda post and discuss Prop versus Decidable in the Lean series; none judge the writing.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- An introduction to property-based testing with QuickCheck2 people · 2 mentions · first linked 2020-12-17
What Hacker News says?
The current release of Agda supports literate markdown. https://jesper.sikanda.be/posts/literate-agda.html
Comment linking /posts/literate-agda.html
on “Learning How to Prove: From the Coq Proof Assistant to Textbook Style”Submitted An introduction to property-based testing with QuickCheck as a story · 21 points
HN discussion> Prop vs Decidable - I vaguely understand the distinction, but can use more examples. Also would like to know does this relate to the noncomputable property. My path to this subject was tortured, so sorry if I don’t account for Polysemy etc. With Prop, I think what you need to dig into is ‘non-computational’ not ‘non-computable’. Mere propositions is probably best viewed with Homotopy Type Theory[0] Two proofs (t1,…
Comment linking /files/definitional-proof-irrelevance-without-K.pdf
on “Learning Lean: Part 1”Submitted Don't worry (about writing Haskell), be happy (writing Agda instead) as a story · 3 points
HN discussionSubmitted 1001 Representations of Syntax with Binding as a story · 3 points
HN discussionSubmitted An introduction to property-based testing with QuickCheck (2020) as a story · 2 points
HN discussion
