نتایج جستجو برای: nonzero complex homomorphism
تعداد نتایج: 796314 فیلتر نتایج به سال:
Journal:
Bulletin of the Iranian Mathematical Society
2015
Let $mathcal {A} $ and $mathcal {B} $ be C$^*$-algebras. Assume that $mathcal {A}$ is of real rank zero and unital with unit $I$ and $k>0$ is a real number. It is shown that if $Phi:mathcal{A} tomathcal{B}$ is an additive map preserving $|cdot|^k$ for all normal elements; that is, $Phi(|A|^k)=|Phi(A)|^k $ for all normal elements $Ainmathcal A$, $Phi(I)$ is a projection, and there exists a posit...
Journal:
:Proceedings of the American Mathematical Society
2010
Journal:
:Transactions of the American Mathematical Society
2003
Journal:
:Transactions of the American Mathematical Society
1975
Journal:
:Proceedings of the Edinburgh Mathematical Society
1968
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