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mathlib3
Lean2019–2023
leanprover-community / mathlib3 · Archived

mathlib3

Lean 3's obsolete mathematical components library: please use mathlib4

15Distinct people
19Mentions
0Explicit recommenders
1.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Lean 3's obsolete mathematical components library: please use mathlib4

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:17:07 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year19 dated mentions

Observed mentions: 2019-09-30 06:45:15 UTC to 2023-12-09 19:32:54 UTC.

024682019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 8 mentions; 0 submissions, 8 comments2023

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC101
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC303
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC404
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC303
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC808

What Hacker News says

8 sources
Communication skills, Leadership skills, Research skills and newer tools for formal methods and theorem proving. The example prompts in the "Teaching with AI" OpenAI blog post are paragraphs of solution specification; far longer than the search queries that an average bear would take the time to specify. https://openai.com/blog/teaching-with-ai https://blog.khanacademy.org/khan-academys-7-step-approach-t... Is there yet an approachable "Intro to Arithmetic and beyond with Lean"? What additional resources for learning Lean and Mathlib were discovered or generated but haven't been added to the docs? https://news.ycombinator.com/context?id=38522544 : AlphaZero self-play, LLMs and Lean, "Q: LLM and/or an RL agent trained on mathlib and tests" https://github.com/leanprover-community/mathlib/issues/17919... -> Proof Assistance SE: https://proo
Read the rest
fassistants.stackexchange.com/ Perhaps to understand LLMs and application, e.g. the Cuttlefish algorithm fills in an erased part of an image; like autocomplete; so, can autocomplete and guess and check (and mutate and crossover; EA methods and selection, too) test [math] symbolic expression trees against existing labeled observations that satisfy inclusion criteria, all day and night in search of a unified model with greater fitness?
In 'A-team' of math proves a critical link between addition and sets
Quantum Discord: https://en.wikipedia.org/wiki/Quantum_discord Quantum nonlocality: https://en.wikipedia.org/wiki/Quantum_nonlocality Butterfly effect -> Quantum chaos: https://en.wikipedia.org/wiki/Quantum_chaos -> Perturbation theory: https://en.wikipedia.org/wiki/Perturbation_theory_(quantum_m... But then entropy in fluids, Satisfiability > Model Theory: https://en.wikipedia.org/wiki/Satisfiability Goal programming: https://en.wikipedia.org/wiki/Goal_programming And, ultimately, Self play (AlphaZero, ) https://en.wikipedia.org/wiki/Self-play "Q: LLM and/or an RL agent trained on [Lean mathlib] and tests" https://github.com/leanprover-community/mathlib/issues/17919
In An easy-sounding problem yields numbers too big for our universe
For the math that you mention, I would suggest looking at mathlib (https://github.com/leanprover-community/mathlib). I agree that the foundations of Coq are somewhat distanced from the foundations most mathematicians are trained in. Lean/mathlib might be a bit more familiar, not sure. That said, I don't see any obstacles to developing classical real analysis or linear algebra in Coq, once you've gotten used to writing proofs in it. I'm curious, which field of math do you work in? Edit: for example, that symmetric matrices have real eigenvalues is shown here in mathlib: https://leanprover-community.github.io/mathlib_docs/analysis...
In Will Computers Redefine the Roots of Math?
Lean mathlib was originally a type checker proof assistant, but now leanprover-community is implementing like all math as proofs in Lean in the mathlib project. Lean (proof assistant) https://en.wikipedia.org/wiki/Lean_(proof_assistant) "Lean mathlib overview": https://leanprover-community.github.io/mathlib-overview.html "Where to start learning Lean": https://github.com/leanprover-community/mathlib/wiki/Where-t... leanprover-community/mathlib: https://github.com/leanprover-community/mathlib
In Ask HN: Did studying proof based math topics make you a better programmer?

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