Posts
Exponential functions and Euler's formula
Homotopy invariance of Contour Integral
Quick Proof of Cauchy Integral Formula
Chain Rule for Maps
Harvard Way to Define Trace
Singular Value Decomposition
Visualization of Moore-Penrose Pseudoinverse
Orientation of a manifold
The definition of a manifold
What's the intuition behind the coarea formula?
A simple definition of the exterior derivative
Solving Underdetermined Systems of PDEs à Gromov
My father's memories of S. S. Chern
My Cousins' Children: 1979 vs 2018
China 1979
Anecdote: My academic history
Pullback of a vector bundle and connection
Anecdote: A short stint on Wall Street
A simple way to discover the Riemann curvature tensor
Holonomy is curvature
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