Lecture
Orthogonal Matrices and Triangular Matrices
Description
This lecture covers the properties of orthogonal matrices and triangular matrices, focusing on matrices of size nxn with linearly independent columns. The instructor explains the relationship between Q and R matrices, where QTQ=I and B=RQ. Various mathematical operations involving these matrices are discussed, such as BQT-RQQT and QBQT=RQ. The lecture also touches on the concept of similarity between matrices A and B, and finding eigenvalues of matrices using determinants and characteristic polynomials.
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