[harshreality]

Heed Axler's warning; the compact version is meant as a refresher, not a book to learn from.

> Linear Algebra Abridged is generated from Linear Algebra Done Right (third edition) by excluding all proofs, examples, and exercises, along with most comments. Learning linear algebra without proofs, examples, and exercises is probably impossible. Thus this abridged version should not substitute for the full book. However, this abridged version may be useful to students seeking to review the statements of the main results of linear algebra.

Maybe you previously worked through the full LADR (or some other math-major linear algebra book like the older, classic Halmos), but your memory is fuzzy. That might be a use for it.

Still, I don't know why you'd read through a 150 page refresher rather than the full book. If you can't afford it, the 3rd edition is on libgen like most other textbooks.