Hacker News new | past | comments | ask | show | jobs | submit login

From the start of Chapter 2:

"In the following four chapters, the basic algebraic structures (groups, rings, fields, vectorspaces) are reviewed, with a major emphasis on vector spaces. Basic notions of linear algebra such as vector spaces, subspaces, linear combinations, linear independence, [...], dual spaces,hyperplanes, transpose of a linear maps, are reviewed."

If anyone needs to start even earlier than this, I've actually found "3D Math Basics for Graphics and Game Development" to be a good true intro for linear algebra-related stuff. I think this would probably hold even if your primary interest is something other than graphics/game dev. Some of the text in that book's intro is a little cringey with its reliance on kind of juvenile game references, but I didn't find that sort of writing continuing during the actual text. So just push past that stuff.

I got a copy of it to act as a refresher before diving into Real-Time Collision Detection since it's been quite a long time since formal math for me (as in, high school, because I'm self-taught in CS). I've managed to make up a lot of ground by working hard and finding classes to audit online (Strang's linear alg course on OCW is a good one), but I have found that depressingly few math texts which claim to be "introductory" are actually truly introductory.

This isn't a slight against the linked work, I absolutely love when profs make resources such as this freely available.

"How to Prove It" and "Book of Proof" are also great intros to formal math, if less immediately practical.

> If anyone needs to start even earlier than this, I've actually found "3D Math Basics for Graphics and Game Development" to be a good true intro for linear algebra-related stuff.

Did you mean to write "3D Math Primer for Graphics and Game Development" [1]? If you did, I agree 100%. I got a lot out of this book and was able to put it to good use for several projects.

[1] https://www.amazon.com/Math-Primer-Graphics-Game-Development...

I would disagree about the gamedev book reference, unless you are referring to the real basics of linear algebra.

The really important concepts for ML are least squares, eigenvalues and vectors, and SVD. Those concepts are not very relevant to game programming.

Well, least squares can be solved with projection, which is relevant for converting between coordinate spaces. But game dev isn't going to give you that intuition.

I believe the person you're replying to was attempting to help people like me, who haven't had a math lesson since leaving high school (in my case over 16 years ago) and whose level of math is roughly "You want me to multiply something? Let me get my phone."

So while the book in question might not be the best resource, it probably is a better starting point than the linked doc.

I wish someone would put together the "basic math" resource for people like that. I didn't do any maths beyond 16. I was an maths idiot at school (me? the teacher? I dunno) but since then I've worked 20 years in programming and had to learn more and more maths just to make a living. However, my maths is a rickety hodge-podge house, with no real foundations. I can't be a total idiot, because I've done some decent work in distributed systems, even research in CRDTs (which made me learn some math) but still, I'd love a self-study plan that took me from 16 to today with the _real basics_.

Thanks for your comment, it made me feel less alone.

I've just finished the coursera's Mathematics for Machine Learning: Linear Algebra (https://www.coursera.org/learn/linear-algebra-machine-learni...) and I'd say its very good for beginners

Such a thing exists https://m.youtube.com/playlist?list=PL5A714C94D40392AB though he's using nonstandard notation it doesn't matter. His lectures are like learning lisp to better understand programming in general but for math. Combine them with a Sheldon Axler college algebra text or something.

Honestly, this is what Khan Academy is. Start at high school algebra and work your way up the skill tree. There is no shortcut though, so you won't find a single book that will teach you undergraduate level maths in a week.

I needed to take a math refresher when I entered college. This was the textbook we used, highly recommended:


I've had the same thoughts before. 'Basic Mathematics' by Serge Lang helped me a lot.

Sometimes I feel doing a refresher in basic algebra and geometry/trig...

Not to look a gift horse in the mouth, but I'm always irritated by math books that include practice exercises but no answers in the back of the book to check your work against.

I believe they do this because the real target audience is other professors. The author wants those professors to use their book for their own courses, and a bunch of problems with no answeres saves a lot of time. There seem to be very few books written with the autodidact in mind. Sometimes you can find the solutions manual via eBay or torrent though.

Do you have a link to that book perchance?

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact