"Linear Algebra" is the second volume of a four-part textbook on mathematics for mathematicians, computer scientists, and physicists, covering the curriculum up to the mathematical preliminary examination. This volume contains the entire linear algebra, including operators and their normal forms, bilinear forms and duality, isometries and self-adjoint mappings, as well as numerical methods. Additionally, it addresses normed vector spaces and linear differential equations, including initial and boundary value problems, as well as special relativity theory. Numerous examples and exercises complement the presentation.