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Characterizing linear mappings through zero products or zero Jordan products

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arxiv 1907.03940 v3 pith:X2V4M7IC submitted 2019-07-09 math.OA

classification math.OA
keywords algebrasmathcalzerojordanalgebraderivationsdeterminedmappings
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abstract

Let $\mathcal{A}$ be a $*$-algebra and $\mathcal{M}$ be a $*$-$\mathcal A$-bimodule, we study the local properties of $*$-derivations and $*$-Jordan derivations from $\mathcal{A}$ into $\mathcal{M}$ under the following orthogonality conditions on elements in $\mathcal A$: $ab^*=0$, $ab^*+b^*a=0$ and $ab^*=b^*a=0$. We characterize the mappings on zero product determined algebras and zero Jordan product determined algebras. Moreover, we give some applications on $C^*$-algebras, group algebra, matrix algebras, algebras of locally measurable operators and von Neumann algebras.

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