The von Neumann inequality for $3\times3$ matrices in the unit Euclidean ball

Autor:	Piekarz, Dariusz
Rok vydání:	2023
Předmět:	Mathematics - Complex Variables
Druh dokumentu:	Working Paper
Popis:	It is shown that the constant $c_{d,3}$ in von Neumann's inequality for d-tuples of commutative and row contractive $3\times3$ matrices, as proved by Hartz, Richter, and Shalit in [2], is independent of the size of the d-tuple. A numerical estimation of the constant is provided. Comment: The article was accepted in the Israel Journal of Mathematics
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2310.12908 Zobrazit plný text záznamu View this record from Arxiv