There are many mathematical textbooks describing the basic properties of matrices and linear algebra, which is the study of vectors and matrices. A good introductory text is Blyth, T. and Robertson, E. (2013). Basic Linear Algebra. London: Springer London, Limited.
NumPy and SciPy are part of the Python mathematical and scientific computing ecosystem, and have extensive documentation that can be accessed from the official website, https://scipy.org. We will see several other packages from this ecosystem throughout this book.
More information about the BLAS and LAPACK libraries that NumPy and SciPy use behind the scenes can be found at the following links: BLAS: https://www.netlib.org/blas/ and LAPACK: https://www.netlib.org/lapack/.
