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Paper's Title:

Numerical Radius Isometries between Hermitian Banach Algebras


Mohamed Mabrouk and Ashwaq Albideewi

Department of Mathematics,
Faculty of Sciences Cite Erriadh,
University of Gabes,
6072 Zrig, Gabes,

 Department of Mathematics,
College of Applied Sciences,
Umm Al-Qura University,
P. O. Box 715,
Makkah 21955,
Saudi Arabia.


In the case of C*-algebras, the author in [2] showed that any linear unital and surjective numerical radius isometry is a Jordan *-isomorphism. In this paper, we generalize this result to the case of Hermitian Banach algebras.

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