Ask HN: good math books

"Linear Algebra Done Right" by Axler is awesome

Don't forget Hastie & Tibshirani's Elements of Statistical Learning!

i second the David MacKay recommendation. its a real pleasure to read.

Book recommendation: David MacKay's (free) book: Information Theory, Inference and Learning Algorithms

MacKay's Information Theory, Inference, etc.

Concrete Mathematics by Knuth, Graham, Patashnik

Knuth, Graham and Patashnik, Concrete Mathematics.

then I'd recommend Concrete Mathamatics

Second the Concrete Mathematics recommendation.

Knuth's "Concrete Mathematics" is a lot of fun.

while it's a cool book, speaking as a former math tutor, it isn't the most helpful from a self study perspective.

The Princeton Companion to Mathematics.

I've purchased "The Princeton Companion to Mathematics"

Calculus Made Easy by Silvanius P. Thompson

i'd also like to recommend Boyd & Vanderberghe's book on Convex Optimization

you can't really beat 'How to Prove It' by Velleman.

I second "How To Prove It".

Mathematician's Delight

Prelude to Mathematics

Hardy, A Course of Pure Mathematics.