✦ LIBER ✦

Numerical radii of simple powers

✍ Scribed by Vitali Chkliar

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 112 KB
Volume: 265
Category: Article
ISSN: 0024-3795
DOI: 10.1016/s0024-3795(96)00594-0

No coin nor oath required. For personal study only.

✦ Synopsis

A counterexample is given for the conjecture that the numerical radius of the n + lth power of an operator is less than or equal to the numerical radius of the nth power of the same operator if the operator is a contraction.

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