Linear Algebra
Strang
60 people recommended it in 23 threads, 2009–2024.
What people on Hacker News said
Strang approaches LA from a practical less-theoretical angle, which makes it very sensible if you're an engineer but may not be as suitable if you're a mathematician.
Beginning to end. Read the book chapter by chapter and exercises by exercise. And what a delight it had been.
This is amazing for self-learners. Free textbook, free lecture videos, free solutions. I bought a hard copy of this book when I first came across this resource.
So although there are a lot of examples and a lot of computation, like the text I had as an undergrad, this development keeps trying to direct the attention of students toward the understanding that they get from higher-level ideas.
In other words, matrix notation, matrix multiplication formulas, etc. are "just" compact ways of representing the behavior of linear maps.
Is there a better way to try and think of matrix multiplication geometrically?
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