LG Aimers 에서 제공하는 KAIST 신진우 교수님의 lecture 입니다. Part 1: Matrix Decomposition (1) Determinant and Trace Determinant $2\times2$ matrix and $3\times3$ matrix are expanded to this generalized form. [DEF] For a matrix $\boldsymbol{A}\in \mathbb{R}^{n\times n}$, for all $j=1,...,n$, $det(\boldsymbol{A}) = \sum_{k=1}^{n}(-1)^{k+j}a_{kj}det(\boldsymbol{A}_{k,j})$ Trace [DEF] The trace of a square matrix $..
