Inner derivations and weak-2-local derivations on the C∗^*-algebra C0(L,A)C_0(L,A)

preprint2016arXivOpen access

Abstract

Let LL be a locally compact Hausdorff space. Suppose AA is a C∗^*-algebra with the property that every weak-2-local derivation on AA is a {\rm(}linear{\rm)} derivation. We prove that every weak-2-local derivation on C0(L,A)C_0(L,A) is a {\rm(}linear{\rm)} derivation. Among the consequences we establish that if BB is an atomic von Neumann algebra or on a compact C∗^*-algebra, then every weak-2-local derivation on C0(L,B)C_0(L,B) is a linear derivation. We further show that, for a general von Neumann algebra MM, every 2-local derivation on C0(L,M)C_0(L,M) is a linear derivation. We also prove several results representing derivations on C0(L,B(H))C_0(L,B(H)) and on C0(L,K(H))C_0(L,K(H)) as inner derivations determined by multipliers.

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