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arXiv · 1810.08288

Isomorphisms of $AC(\sigma)$ spaces for linear graphs

Shaymaa Al-shakarchi·Ian Doust
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Abstract

We show that among compact subsets of the plane which are drawings of linear graphs, two sets $\sigma$ and $\tau$ are homeomorphic if and only if the corresponding spaces of absolutely continuous functions (in the sense of Ashton and Doust) are isomorphic as Banach algebras. This gives an analogue for this class of sets to the well-known result of Gelfand and Kolmogorov for $C(\Omega)$ spaces.

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Shaymaa Al-shakarchi, Ian Doust. 2018-10-18. Isomorphisms of $AC(\sigma)$ spaces for linear graphs. https://doi.org/10.1007/s43036-020-00053-x

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