Transcription of Linear Algebra Review and Reference
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Linear Algebra Review and ReferenceZico Kolter (updated by Chuong Do and Tengyu Ma)June 20, 2020 Contents1 Basic Concepts and Basic Notation ..22 Matrix Vector-Vector Products .. Matrix-Vector Products .. Matrix-Matrix Products ..53 Operations and The Identity Matrix and Diagonal Matrices .. The Transpose .. Symmetric Matrices .. The Trace .. Norms .. Linear Independence and Rank .. The Inverse of a Square Matrix .. Orthogonal Matrices .. Range and Nullspace of a Matrix .. The Determinant .. Quadratic Forms and Positive Semidefinite Matrices .. Eigenvalues and Eigenvectors.
Jun 20, 2020 · equality above may appear confusing to you. If so, take the time to check it for yourself! Second, we can also view matrix-matrix multiplication as a set of matrix-vector products. Speci cally, if we represent Bby columns, we can view the columns of Cas matrix-vector products between Aand the columns of B. Symbolically, C= AB= A 2 4 j j j b1 b2 ...
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