2.2: Matrix Multiplication - Mathematics LibreTexts
https://math.libretexts.org/Bookshelves/Linear_Algebra/Fundamentals_of_Matrix_Algebra_(Hartman)/02%3A_Matrix_Arithmetic/2.02%3A_Matrix_Multiplication
WebSep 17, 2022 · Definition: Matrix Multiplication. Let A be an m × r matrix, and let B be an r × n matrix. The matrix product of A and B, denoted A ⋅ B, or simply AB, is the m × n matrix M whose entry in the ith row and jth column is the product of the ith row of A and the jth column of B. It may help to illustrate it in this way.
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