
doi: 10.1007/bf02571531
The well known Dauns-Hofmann theorem identifies the center of the multiplier algebra M(A) of a \(C^*\)-algebra A with the algebra C(\(\beta\) Ǎ) of all continuous functions on the Stone-Čech compactification \(\beta\) Ǎ of the primitive spectrum Ǎ of A. A local version of M(A) was first studied by \textit{G. A. Elliott} [J. Funct. Anal. 23, 1-10 (1976; Zbl 0335.46037)] and \textit{G. K. Pedersen} [Invent. Math. 45, 299- 305 (1978; Zbl 0376.46040)], and more recently by the authors [Arch. Math. 54, No.4, 358-364 (1990; Zbl 0669.46026); Glasgow Math. J., in press (1990); J. Austral. Math. Soc., to appear]. This local multiplier algebra \(M_{loc}(A)\) is defined as the direct limit \(\lim_{\to}M(I)\) where I runs through the downwards directed set of all closed essential ideals of A. The main result of the present paper identifies the center \(Z(M_{loc}(A))\) of \(M_{loc}(A)\) with C(\(\lim_{\leftarrow}\beta \check I)\) where the inverse limit is taken over all dense open subsets Ǐ of Ǎ. This is then applied to study the process of iterating the local multiplier algebra; in particular, it is proved that \(Z(M_{loc}(M_{loc}(A)))=Z(M_{loc}(A))\).
Topological (rings and) algebras with an involution, local multiplier algebra, center of the multiplier algebra, Rings and algebras of continuous, differentiable or analytic functions, Structure, classification of topological algebras, Article, symmetric ring of quotients, primitive spectrum, General theory of \(C^*\)-algebras, 510.mathematics, Inductive and projective limits in functional analysis, Dauns-Hofmann theorem, continuous functions on the Stone-Čech compactification, \(C^ *\)-algebra, extended centroid
Topological (rings and) algebras with an involution, local multiplier algebra, center of the multiplier algebra, Rings and algebras of continuous, differentiable or analytic functions, Structure, classification of topological algebras, Article, symmetric ring of quotients, primitive spectrum, General theory of \(C^*\)-algebras, 510.mathematics, Inductive and projective limits in functional analysis, Dauns-Hofmann theorem, continuous functions on the Stone-Čech compactification, \(C^ *\)-algebra, extended centroid
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