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This lecture covers the equivalence between different statements related to surjective, injective, and linearly independent properties of a linear transformation represented by a matrix. It also explains the concept of writing a vector as a linear combination of the columns of a matrix and the properties of the reduced row-echelon form of a matrix. Additionally, it delves into matrix calculations, including matrix addition, scalar multiplication, and matrix multiplication. Special cases like null matrices, square matrices, and diagonal matrices are also discussed.
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