Quest for Knowledge

Draw 5 cards. Then discard 5 cards
(Singular Value Decomposition of Linear Maps)
Let L: W1 -> W2 be a linear map between finite dimensional inner product spaces of dimensions
n and m, respectively. If r = rank(A), then there exist orthonormal basis B and C for W1 and
W2 and an r × r diagonal matrix D such that...
— F23 MATH 235 Course Notes