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Show HN: Moli P2P – An ephemeral, serverless image gallery (Rust and WebRTC)

https://moli-green.is/
1•ShinyaKoyano•1m ago•0 comments

How I grow my X presence?

https://www.reddit.com/r/GrowthHacking/s/UEc8pAl61b
1•m00dy•3m ago•0 comments

What's the cost of the most expensive Super Bowl ad slot?

https://ballparkguess.com/?id=5b98b1d3-5887-47b9-8a92-43be2ced674b
1•bkls•3m ago•0 comments

What if you just did a startup instead?

https://alexaraki.substack.com/p/what-if-you-just-did-a-startup
1•okaywriting•10m ago•0 comments

Hacking up your own shell completion (2020)

https://www.feltrac.co/environment/2020/01/18/build-your-own-shell-completion.html
1•todsacerdoti•13m ago•0 comments

Show HN: Gorse 0.5 – Open-source recommender system with visual workflow editor

https://github.com/gorse-io/gorse
1•zhenghaoz•13m ago•0 comments

GLM-OCR: Accurate × Fast × Comprehensive

https://github.com/zai-org/GLM-OCR
1•ms7892•14m ago•0 comments

Local Agent Bench: Test 11 small LLMs on tool-calling judgment, on CPU, no GPU

https://github.com/MikeVeerman/tool-calling-benchmark
1•MikeVeerman•15m ago•0 comments

Show HN: AboutMyProject – A public log for developer proof-of-work

https://aboutmyproject.com/
1•Raiplus•16m ago•0 comments

Expertise, AI and Work of Future [video]

https://www.youtube.com/watch?v=wsxWl9iT1XU
1•indiantinker•16m ago•0 comments

So Long to Cheap Books You Could Fit in Your Pocket

https://www.nytimes.com/2026/02/06/books/mass-market-paperback-books.html
3•pseudolus•16m ago•1 comments

PID Controller

https://en.wikipedia.org/wiki/Proportional%E2%80%93integral%E2%80%93derivative_controller
1•tosh•21m ago•0 comments

SpaceX Rocket Generates 100GW of Power, or 20% of US Electricity

https://twitter.com/AlecStapp/status/2019932764515234159
2•bkls•21m ago•0 comments

Kubernetes MCP Server

https://github.com/yindia/rootcause
1•yindia•22m ago•0 comments

I Built a Movie Recommendation Agent to Solve Movie Nights with My Wife

https://rokn.io/posts/building-movie-recommendation-agent
4•roknovosel•22m ago•0 comments

What were the first animals? The fierce sponge–jelly battle that just won't end

https://www.nature.com/articles/d41586-026-00238-z
2•beardyw•30m ago•0 comments

Sidestepping Evaluation Awareness and Anticipating Misalignment

https://alignment.openai.com/prod-evals/
1•taubek•31m ago•0 comments

OldMapsOnline

https://www.oldmapsonline.org/en
1•surprisetalk•33m ago•0 comments

What It's Like to Be a Worm

https://www.asimov.press/p/sentience
2•surprisetalk•33m ago•0 comments

Don't go to physics grad school and other cautionary tales

https://scottlocklin.wordpress.com/2025/12/19/dont-go-to-physics-grad-school-and-other-cautionary...
2•surprisetalk•33m ago•0 comments

Lawyer sets new standard for abuse of AI; judge tosses case

https://arstechnica.com/tech-policy/2026/02/randomly-quoting-ray-bradbury-did-not-save-lawyer-fro...
4•pseudolus•34m ago•0 comments

AI anxiety batters software execs, costing them combined $62B: report

https://nypost.com/2026/02/04/business/ai-anxiety-batters-software-execs-costing-them-62b-report/
1•1vuio0pswjnm7•34m ago•0 comments

Bogus Pipeline

https://en.wikipedia.org/wiki/Bogus_pipeline
1•doener•35m ago•0 comments

Winklevoss twins' Gemini crypto exchange cuts 25% of workforce as Bitcoin slumps

https://nypost.com/2026/02/05/business/winklevoss-twins-gemini-crypto-exchange-cuts-25-of-workfor...
2•1vuio0pswjnm7•35m ago•0 comments

How AI Is Reshaping Human Reasoning and the Rise of Cognitive Surrender

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6097646
3•obscurette•36m ago•0 comments

Cycling in France

https://www.sheldonbrown.com/org/france-sheldon.html
2•jackhalford•37m ago•0 comments

Ask HN: What breaks in cross-border healthcare coordination?

1•abhay1633•37m ago•0 comments

Show HN: Simple – a bytecode VM and language stack I built with AI

https://github.com/JJLDonley/Simple
2•tangjiehao•40m ago•0 comments

Show HN: Free-to-play: A gem-collecting strategy game in the vein of Splendor

https://caratria.com/
1•jonrosner•41m ago•1 comments

My Eighth Year as a Bootstrapped Founde

https://mtlynch.io/bootstrapped-founder-year-8/
1•mtlynch•41m ago•0 comments
Open in hackernews

Ask HN: Looking for a good course to learn proof assistant Lean 4

5•rabarbers•2mo ago
Hi HN, I’ve been exploring Lean 4, the theorem prover and programming language, and I’m impressed by what it offers for formal reasoning and proofs. However, it’s been difficult to find a structured, instructor-led course or organized study group (as opposed to just tutorials or documentation). Does anyone know of: University or online courses (open enrollment) teaching Lean 4 Any guided cohorts, bootcamps, or community study programs. My goal is to learn Lean 4 in a more systematic and interactive way — ideally with feedback, projects, or peer discussion. If you’ve taken such a course, organized one, or know where to look (e.g. Discords, Zulip groups, or university links), I’d love your pointers.

Thanks!

Comments

hcta•2mo ago
I located this course https://github.com/ATOMSLab/LFSE2024 with video lectures @ https://www.youtube.com/@tylerjosephson8860 . Let us know if it's good
aborsy•2mo ago
What can you prove with it?

Ignoring that advertised case a few years ago, what are non-trivial theorems that you can prove with it?

i_don_t_know•2mo ago
I have been eyeing “The Hitchhiker's Guide to Logical Verification” but haven’t yet found the time to work through it.

The 2025 edition material is at https://github.com/lean-forward/logical_verification_2025?ta...

An older version (2022-2023) with video lectures is at https://lean-forward.github.io/logical-verification/2022/ind...

gku•2mo ago
CS 99: Functional Programming and Theorem Proving in Lean 4,designed by Stanford University Centaur Lab: https://web.stanford.edu/class/cs99/