ZHANG, Ruda July 17, 2022:  Replace 'matrix theory' with 'matrix analysis'. Reorganize notes. More on orthogonal matrices. [3738382]
ZHANG, Ruda July 13, 2022:  Add Weyl inequalities. More on subspace distance. Add spectral radius. [ddb4235]
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 June 04, 2022:  Add left/right inverse, matrix exponential, condition number, Frechet derivative, inverse. [667167e]
ZHANG, Ruda November 26, 2021:  Add matrix Schatten p-norms. [68465b9]
ZHANG, Ruda February 25, 2021:  More on analytic function, chaos, time series models, applications of PLoM; refs on measure theory. [10130df]
ZHANG, Ruda February 19, 2021:  Digitize vector and matrix norms. [d693a77]
Ruda Zhang June 26, 2016:  add category tag to wiki pages [a9b356c]
Ruda Zhang June 26, 2016:  use canonical filename and no internal H1 [eeca8ff]