Acta Mathematica Academiae Paedagogicae Nyíregyháziensis, Vol. 30, No. 1, pp. 111-118 (2014)

Maps preserving the spectrum of certain products of operators

Maps preserving the spectrum of certain products of operators

Ali Taghavi and Roja Hosseinzadeh

Abstract: Let H be a complex Hilbert space, B(H) and S(H) be the spaces of all bounded operators and all self-adjoint operators on H, respectively. We give the concrete forms of the maps on B(H) and also S(H) which preserve the spectrum of certain products of operators.

Keywords: Operator algebra; Non-linear spectrum preserving; Self-adjoint operator

Classification (MSC2000): 46J10; 47B48

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