English

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

Operator Algebras 2016-08-16 v1 Functional Analysis

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.

Keywords

Cite

@article{arxiv.1608.03969,
  title  = {Inner derivations and weak-2-local derivations on the C$^*$-algebra $C_0(L,A)$},
  author = {E. Jordá and A. M. Peralta},
  journal= {arXiv preprint arXiv:1608.03969},
  year   = {2016}
}