Compact Subsets of the Glimm Space of a $C^*$-algebra

Abstract: If $A$ is a $\sigma$-unital $C^*$-algebra and $a$ is a strictly positive element of $A$ then for every compact subset $K$ of the complete regularization $\mathrm{Glimm}(A)$ of $\mathrm{Prim}(A)$ there exists $\alpha > 0$ such that $K\subset {G\in \mathrm{Glimm}(A) \mid |a + G|\geq \alpha}$. This extends a 1974 result of J. Dauns to all $\sigma$-unital $C^*$-algebras. However, there is a $C^*$-algebra $A$ and a compact subset of $\mathrm{Glimm}(A)$ that is not contained in any set of the form ${G\in \mathrm{Glimm}(A) \mid |a + G|\geq \alpha}$, $a\in A$ and $\alpha > 0$.