Author

Eusebio Gardella

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Preprint Oct 2026

Isomorphisms of $\ell^1$-crossed products of topological systems

We give a complete description of the isometric isomorphisms between the $\ell^1$-crossed products of actions of discrete groups on nonempty compact Hausdorff spaces. In particular, two such crossed products are isometrically isomorphic as Banach algebras if and only if the actions are topologically isomorphic. It foll...

Eusebio Gardella, T. Roland · 0 citations

Review Open access Oct 2026

Classifiability of crossed products

This survey studies C*-algebraic crossed products arising from topological dynamical systems with an eye toward their classifiability in the sense of the Elliott program. We introduce the crossed product construction for actions by discrete groups in full generality, and then focus on commutative systems to establish s...

Eusebio Gardella · 0 citations