Sums of squares. II: Matrix functions

DOI10.1016/j.laa.2022.12.026OpenAlexW3187005343MaRDI QIDQ2689156

Lyudmila Korobenko, Eric T. Sawyer

Publication date: 9 March 2023

Published in: Linear Algebra and its Applications (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2107.12505

zbMATH Keywords

hypoellipticitysums of squares decompositionnonnegative matrix functionssubordinate matrices

Mathematics Subject Classification ID

Degenerate elliptic equations (35J70) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Continuity and differentiation questions (26B05) Special properties of functions of several variables, Hölder conditions, etc. (26B35)

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