Introduction to Linear Algebra, Gilbert Strang, 2016 (Wellesley-Cambridge Press) - A widely recognized textbook for linear algebra, covering fundamental matrix operations comprehensively, including addition and subtraction.
Introduction to Applied Linear Algebra: Vectors, Matrices, and Least Squares, Stephen Boyd and Lieven Vandenberghe, 2018 (Cambridge University Press) - This book approaches linear algebra from an applied perspective, highly relevant for machine learning contexts, and includes detailed explanations of matrix operations.
Array objects - Basic operations, NumPy Developers, 2024 - The official documentation for NumPy, providing details and examples on how matrix addition and subtraction are implemented in Python using array objects.