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AlgebraicJulia
Catlab.jl
Julia2021–2021
AlgebraicJulia / Catlab.jl

Catlab.jl

A framework for applied category theory in the Julia language

2Distinct people
3Mentions
0Explicit recommenders
732GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A framework for applied category theory in the Julia language

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM 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 week3 dated mentions

Observed mentions: 2021-06-06 01:39:34 UTC to 2021-12-21 20:57:39 UTC. Weeks start Monday, UTC.

012021-05-31 00:00:00 UTC to 2021-06-07 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsMay 312021-06-07 00:00:00 UTC to 2021-06-14 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-06-14 00:00:00 UTC to 2021-06-21 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-06-21 00:00:00 UTC to 2021-06-28 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-06-28 00:00:00 UTC to 2021-07-05 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-07-05 00:00:00 UTC to 2021-07-12 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-07-12 00:00:00 UTC to 2021-07-19 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-07-19 00:00:00 UTC to 2021-07-26 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-07-26 00:00:00 UTC to 2021-08-02 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2021-08-02 00:00:00 UTC to 2021-08-09 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-08-09 00:00:00 UTC to 2021-08-16 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-08-16 00:00:00 UTC to 2021-08-23 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-08-23 00:00:00 UTC to 2021-08-30 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-08-30 00:00:00 UTC to 2021-09-06 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-09-06 00:00:00 UTC to 2021-09-13 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsSep 62021-09-13 00:00:00 UTC to 2021-09-20 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-09-20 00:00:00 UTC to 2021-09-27 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-09-27 00:00:00 UTC to 2021-10-04 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-10-04 00:00:00 UTC to 2021-10-11 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-10-11 00:00:00 UTC to 2021-10-18 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-10-18 00:00:00 UTC to 2021-10-25 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-10-25 00:00:00 UTC to 2021-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-11-01 00:00:00 UTC to 2021-11-08 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-11-08 00:00:00 UTC to 2021-11-15 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-11-15 00:00:00 UTC to 2021-11-22 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-11-22 00:00:00 UTC to 2021-11-29 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-11-29 00:00:00 UTC to 2021-12-06 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-12-06 00:00:00 UTC to 2021-12-13 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-12-13 00:00:00 UTC to 2021-12-20 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-12-20 00:00:00 UTC to 2021-12-27 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsDec 20

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
May 312021-05-31 00:00:00 UTC2021-06-07 00:00:00 UTC101
Jun 72021-06-07 00:00:00 UTC2021-06-14 00:00:00 UTC000
Jun 142021-06-14 00:00:00 UTC2021-06-21 00:00:00 UTC000
Jun 212021-06-21 00:00:00 UTC2021-06-28 00:00:00 UTC000
Jun 282021-06-28 00:00:00 UTC2021-07-05 00:00:00 UTC000
Jul 52021-07-05 00:00:00 UTC2021-07-12 00:00:00 UTC000
Jul 122021-07-12 00:00:00 UTC2021-07-19 00:00:00 UTC000
Jul 192021-07-19 00:00:00 UTC2021-07-26 00:00:00 UTC000
Jul 262021-07-26 00:00:00 UTC2021-08-02 00:00:00 UTC101
Aug 22021-08-02 00:00:00 UTC2021-08-09 00:00:00 UTC000
Aug 92021-08-09 00:00:00 UTC2021-08-16 00:00:00 UTC000
Aug 162021-08-16 00:00:00 UTC2021-08-23 00:00:00 UTC000
Aug 232021-08-23 00:00:00 UTC2021-08-30 00:00:00 UTC000
Aug 302021-08-30 00:00:00 UTC2021-09-06 00:00:00 UTC000
Sep 62021-09-06 00:00:00 UTC2021-09-13 00:00:00 UTC000
Sep 132021-09-13 00:00:00 UTC2021-09-20 00:00:00 UTC000
Sep 202021-09-20 00:00:00 UTC2021-09-27 00:00:00 UTC000
Sep 272021-09-27 00:00:00 UTC2021-10-04 00:00:00 UTC000
Oct 42021-10-04 00:00:00 UTC2021-10-11 00:00:00 UTC000
Oct 112021-10-11 00:00:00 UTC2021-10-18 00:00:00 UTC000
Oct 182021-10-18 00:00:00 UTC2021-10-25 00:00:00 UTC000
Oct 252021-10-25 00:00:00 UTC2021-11-01 00:00:00 UTC000
Nov 12021-11-01 00:00:00 UTC2021-11-08 00:00:00 UTC000
Nov 82021-11-08 00:00:00 UTC2021-11-15 00:00:00 UTC000
Nov 152021-11-15 00:00:00 UTC2021-11-22 00:00:00 UTC000
Nov 222021-11-22 00:00:00 UTC2021-11-29 00:00:00 UTC000
Nov 292021-11-29 00:00:00 UTC2021-12-06 00:00:00 UTC000
Dec 62021-12-06 00:00:00 UTC2021-12-13 00:00:00 UTC000
Dec 132021-12-13 00:00:00 UTC2021-12-20 00:00:00 UTC000
Dec 202021-12-20 00:00:00 UTC2021-12-27 00:00:00 UTC101

What Hacker News says

3 sources
Hi folks! Author of C3T here! [1] This is very much a work in progress project focused on creating accessible materials on Category Theory to get started, fast! My perspective comes from a non-maths background and making this approachable for folks in similar positions but are curious about what Category Theory is. The website is made using Literate Programming tools [2, 3, 4] and utilizes both the Julia and Haskell programming language. Currently, I am working on putting together notes for the following resources: 1. Category Theory for Programmers by Bartosz Milewski 2. Category Theory for the Science by David Spivak 3. Catlab.jl: https://github.com/AlgebraicJulia/Catlab.jl 4. Semagrams.jl: https://github.com/AlgebraicJulia/Semagrams.jl Feel free to star or follow this repository here: https://github.com/TheCedarPrince/C3T To keep track
Read the rest
of what happens to it. Please open issues, suggestions or thoughts on it! ~ tcp [1] More about me: http://jacobzelko.com/ [2] Franklin.jl: https://github.com/tlienart/Franklin.jl [3] Weave.jl: https://github.com/JunoLab/Weave.jl [4] Julia Markdown: http://weavejl.mpastell.com/stable/chunk_options/
In Crash Course Category Theory – C3T
Can you elaborate on where the hole is? Jeff Bezanson's thesis work on Julia was undoubtedly PLT, as were some of the other folks at the Julia Lab now (e.g. Shuhei Kadowaki). Keno Fischer is very much into all things PLT, as can be evidenced by his work on Diffractor (see this ACM SIGPLAN presentation [1]). Ditto for James Fairbanks and all the people working on Catlab.jl's [2] ecosystem. Where I do agree with you is that PLT awareness has not permeated the entire community as much as I'd like to see. Certainly one feels a need sometimes to push back against increased "Matlab-ification" of the language. However, it is also nice to see a direct line between rather theoretical concepts like abstract interpretation and very practical use cases like GPU computation. [1] https://www.youtube.com/watch?v=mQnSRfseu0c [2] https://github.com/Algebr
Read the rest
In What's bad about Julia?
The biggest group outside of numerical computing in Julia land are the PL and systems people though? This includes type theorists [1], database folks [2], distributed systems people ([3] to name just one). There are also a fair number of compiler nuts, hence the existence of multiple projects [4][5] in this space. And this is before getting into things that bridge more than one of the domains above, e.g. [7] or [8]. FTR, I think it's fair to question whether numerical computing should have an outsized influence on the direction of the language. I also think it's a pretty fair comparison to point out how standardized and consistent the Rust governance process is compared to Julia's (the Rust RFC system is an exemplar here). That doesn't mean there is a dearth of PL and systems knowledge in the Julia community though. [1] https://github.com
Read the rest
In From Julia to Rust

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