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Norm Estimates for Commutators of Operators
Author(s) -
Boyadzhiev Khristo N.
Publication year - 1998
Publication title -
journal of the london mathematical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.441
H-Index - 62
eISSN - 1469-7750
pISSN - 0024-6107
DOI - 10.1112/s0024610798006139
Subject(s) - mathematics , norm (philosophy) , hilbert space , pure mathematics , operator norm , linear operators , mathematical analysis , political science , bounded function , law
Given two self‐adjoint Hilbert space operators A , B , and a continuous function f , we prove several inequalities of the form ∥ f ( A ) X − X f ( B )∥⩽ C ( f )∥ AX − XB ∥ involving the L p ‐norm of the derivative f ′ and the Besov B r ∞,1 ‐norm of f .