๐”– Bobbio Scriptorium
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Maps preserving the idempotency of products of operators

โœ Scribed by Li Fang; Guoxing Ji; Yongfeng Pang


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
175 KB
Volume
426
Category
Article
ISSN
0024-3795

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๐Ÿ“œ SIMILAR VOLUMES


Nonlinear maps preserving numerical radi
โœ Jinchuan Hou; Kan He; Xiuling Zhang ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 215 KB

Let H be a complex Hilbert space of dimension greater than 2 and J โˆˆ B(H) be an invertible self-adjoint operator. Denote by A โ€  = J -1 A \* J the indefinite conjugate of A โˆˆ B(H) with respect to J and denote by w(A) the numerical radius of A. Let W and V be subsets of B(H) which contain all rank one