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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