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