Abstract
The aim of this chapter is to discuss the basic operations on matrices, to introduce the notions of linear (in)dependence of elements in \(\mathbb {R}^k\), of a basis of \(\mathbb {R}^k\) and of coordinates of an element in \(\mathbb {R}^k\) with respect to a basis. Furthermore, we extend the notion of the determinant of \(2\times 2\) matrices, introduced at the end of Sect. 1.2, to square matrices of arbitrary dimension and characterize invertible square matrices as being those with nonvanishing determinant.
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Benz, M., Kappeler, T. (2023). Matrices and Related Topics. In: Linear Algebra for the Sciences. UNITEXT(), vol 151. Springer, Cham. https://doi.org/10.1007/978-3-031-27220-2_2
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DOI: https://doi.org/10.1007/978-3-031-27220-2_2
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Publisher Name: Springer, Cham
Print ISBN: 978-3-031-27219-6
Online ISBN: 978-3-031-27220-2
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