Linear algebra problem book

What Hacker News says

1. stiffJun 2022
   Paul Halmos wrote a book I like a lot titled "Linear Algebra Problem Book" that teaches you linear algebra through a sequence of problems - its different from the one posted here in that the problems are often preceded by 2-3 pages of discussion/motivation and almost all of them are conceptual and interesting.
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2. kylebrownOct 2012
   I wish that I'd had a similar experience. I bought Halmos "Linear Algebra Problem Book" based on the accolades, but the lack of motivation/inspiration caught me offguard and left me sorely disappointed before the end of chapter 1. If you can appreciate maths without pictures, you have to be either truly gifted or totally deluded.

   Recently, learning to do Principal Components Analysis to solve a handwriting recognition problem is what finally shed an enchanted light on linear algebra. The way that a simple matrix of data samples is transformed into an ordered set of principle components (eigenvectors, ordered by eigenvalue) is.. "unreasonably effective" (as they say). The principal components are your signal, and the rest (with eigenvalues ~0) are the noise. the handwriting recognition, btw, works fantastic for my simple application. no need for non-linear kernels and whatnot.

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