References
- A Primer on spectral theory B.Aupetit
-
Arch. Math.
Derivations decreasing the spectral radius
M.Bres
$\u{a}$ r - Proc. Amer. Math. Soc. Spectrally bounded generallize inner derivations R.Curto;M.Mathieu
- Where to find the image of a derivation M.Mathieu
-
Manuscripta Math.
Derivation, Commutators and the radical
V.Pt
$\u{a}$ k - J. London Math. Soc. Conditions related to centrality in a Banach algebra J.F.Rennison
- J. London Math. Soc. Conditions related to centrality in a Banach algebraⅡ J.F.Rennison
- Math. Proc. Camb. Phil. Soc. The quasi-centre of a Banach Algebra J.F.Rennison
- General theory of Banach algebras C.E.Ricart