Geometry and algebra of linear maps, vectors, and matrices
Symmetric matrices (A = Aᵀ) are unusually well-behaved, and they happen to be the ones that show up most in ML. Covariance matrices, Hessians, Gram matrices: all symmetric. They come with a guarantee clean enough to have a name.
🔒 This is a Pro lesson — the interactive figure, worked examples, quiz and practice open with Pro access.
▶ Symmetric Matrices