Operators and Matrices · Volume 17, Issue 1 A constructive proof of a noncommutative Fejér-Riesz theorem 17-11 Pages 141-152 DOI 10.7153/oam-2023-17-11 Downloads Short PDF Full PDF PNG Authors Palak Arora Keywords multi-Toeplitz operator outer factorization Schur complement Subject classes 47A57 47A68 47A35