ZHANG, Ruda July 17, 2022:  Replace 'matrix theory' with 'matrix analysis'. Reorganize notes. More on orthogonal matrices. [3738382]
ZHANG, Ruda July 14, 2022:  Minor edits. On convexity of norms. [93269f0]
ZHANG, Ruda July 10, 2022:  Correct math. More on L2-Wasserstein geometry. SVD of square matrix. Ky Fan k-norms. Singular value inequality. [e198ed4]
ZHANG, Ruda June 14, 2022:  Minor edits; more on SVD, normal matrix, unitary matrix. [31e71f8]
ZHANG, Ruda January 14, 2022:  Intuition on matrix factorization; add pseudoinverse; correct math. [bc88491]
ZHANG, Ruda December 19, 2021:  Minor edits. [f64ba1c]
ZHANG, Ruda July 20, 2021:  More on matrix decompositions. [621fd2b]
ZHANG, Ruda March 03, 2021:  Use mathcal for big O notation, to distinguish from the orthogonal group. [69caae9]
ZHANG, Ruda February 25, 2021:  More on singular value decomposition. [8deee9b]
ZHANG, Ruda February 19, 2021:  More on Grassmannian; Jacobi field, conjugate point. [ffad0c9]
ZHANG, Ruda May 15, 2020:  More on pseudoinverse [bc7fd0b]
ZHANG, Ruda March 01, 2019:  Diffusion maps. [9f3a5bd]
ZHANG, Ruda February 21, 2019:  Interpretation of SVD [4ea0ad2]
ZHANG, Ruda February 19, 2019:  PCA, SVD, learning theory; digitize notes on SVD [ce26c0a]
Ruda Zhang June 26, 2016:  add category tag to wiki pages [a9b356c]
Ruda Zhang June 26, 2016:  fix pdf link path and use external link style [570ec4f]
Ruda Zhang June 26, 2016:  use canonical filename and no internal H1 [eeca8ff]