[jayro]

At Math Academy (https://mathacademy.com), we implement spaced repetition in combination with a knowledge graph consisting of several thousand math topics and tens of thousands of connections (and growing). We're working on a post that explains how this all works technically.

We have a Linear Algebra course (https://mathacademy.com/courses/linear-algebra) that some of you might find interesting given how often that topic shows up on HN, and we just finished our Math for Machine Learning course (https://mathacademy.com/courses/mathematics-for-machine-lear...) for anyone who might be interested in giving that a look.

I'm the founder if anyone has any questions.

Sorry about the shameless plug.;)

[deathtrader666]

Hi,

Given that SRS is a long-term endeavour, going on several years, I'd balk at paying $49/month for your app. Maybe $60/year, but your current pricing is really hard to swallow.

[gary_bernhardt]

I'm the founder of Execute Program (https://www.executeprogram.com), where we've done a similar thing (knowledge graph + SRS) for programming languages/tools since 2019. Interesting to see that you have a graphviz render of a subgraph right on the landing page! We've toyed with the idea of exposing the graph visually, but haven't done it yet.

[sn9]

The UI/UX of executeprogram is genuinely amazing and the way lessons are broken down is extremely well-thought out!

Definitely recommended for anyone wanting to learn JS/TS, regex, and SQL (especially in conjunction with Jennifer Widom's Intro to Database lectures).

(Given your background with Ruby, have you thought about doing a Ruby course? I find it relatively easier finding resources for JS, Python, and even Rust. I imagine you could make an amazing Ruby introduction, though perhaps it would require more work than JS/TS than I would expect.)

[hn_user82179]

This is very, very neat. I've seen a lot of cool looking learn math sites that stop after (best case) freshman college math. I have a BS in math but there were some courses I never felt I got or it's been so long (>10 years) that I've forgotten more than I'd like and it'd be really nice to brush up on the interesting stuff.

I'm very interested in your methods of proofs and abstract algebra courses and I'm excited for them to be released!

[yangikan]

Is there a way to try it out (at least for a week) without paying the $49?

[jayro]

There's a 30-day free trial, so if you cancel during that period you get a complete refund.

[j45]

Really nice to hear knowledge graphs being used for... learning knowledge.

[j45]

That would be a fun post to read - is there a link to your blog?