HackerTubewatch
Surprise me
Frame from Category Theory by Tom LaGatta Plays via YouTube's privacy-enhanced embed

Category Theory by Tom LaGatta

3 videos recommended on HN
YouTube
3 HN users recommended this talk3 months2014–2017 score 3
Years with an HN recommendation, 2007–2026

Recommended as a more approachable introduction to category theory than the more formal lecture series people often start with.

Tom LaGatta's talk on category theory at a 2014 LispNYC meetup, covering objects, morphisms and the basic ideas in an informal, conversational style. It runs about 97 minutes.

“Milewski's YouTube lectures gets mentioned a lot, but I couldn't make much sense of them before watching Tom LaGatta's more informal and conversational presentation” (HN, 2017)

3 recommendations · 1 citations · Talks · intro

4 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@mjhoy May 2014 Recommends
on HN thread Thinking in Types
I couldn't really tell you anything about category theory. But I am beginning to grasp monads. (At least in the context of Haskell programs.) I think the important thing is to see how they work, see what they do. btw, you might try this video: [this video]
Accessible talk introducing category theory.
@aputsiak Apr 2017 Recommends
on HN thread Category Theory, Syntactically (2016)
nLab has been one of the best sources I've come across. My aim is to express and work with philosophical logic in a more formal way, and nLab is a great source for that as well. Milewski's YouTube lectures gets mentioned a lot, but I couldn't make much sense of them before watching Tom LaGatta's more informal and conversational presentation [this video] Good luck and keep at it.
Informal, conversational category theory presentation that is easier to follow.

Citations, criticism and jokes

@antimora Dec 2014 Cites it
on HN thread A concise introduction to category theory
Tom LaGatta in this video on Category Theory listed this website as number one resource on category theory. [this video] There he also lists some books on category theory. I am putting a direct link when he mentions the references.
Lists nLab and books as category theory resources.

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

Keyboard shortcuts

/
Search
j k
Next / previous video
r
Surprise me
l
Like (video page)
w
Watch later (video page)
?
This help
Esc
Close