Astrid an Huef

activity

19992005

most citedCovariant representations of Hecke algebras and imprimitivity for crossed products by homogeneous spaces

1 citations · 2 across the 6 of their papers we have counts for

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11 papers · 1 filter

math.OA2005★ 1 cited

Covariant representations of Hecke algebras and imprimitivity for crossed products by homogeneous spaces

Astrid an Huef, S. Kaliszewski, Iain Raeburn

For discrete Hecke pairs $(G, H)$ , we introduce a notion of covariant representation which reduces in the case where $H$ is normal to the usual definition of covariance for the acti…

math.OA2005

Strength of convergence in the orbit space of a transformation group

Robert Archbold, Astrid an Huef

Let (G, X) be a second-countable transformation group with G acting freely on X. It is shown that measure-theoretic accumulation of the action and topological strength of convergen…

math.OA2005★ 1 cited

Extension problems for representations of crossed-product C*-algebras

Astrid an Huef, S. Kaliszewski, Iain Raeburn +1

We consider the following problem. Suppose $α$ is an action of a locally compact group $G$ on a $C^{*}$ -algebra $A$ , $H$ is a closed subgroup of $G$ , and $(π, U)$ is a covariant repre…

math.OA2003

Extension problems and non-abelian duality for $C^{*}$ -algebras

Astrid an Huef, S. Kaliszewski, Iain Raeburn

Suppose that $H$ is a closed subgroup of a locally compact group $G$ . We show that a unitary representation $U$ of $H$ is the restriction of a unitary representation of $G$ if and…

math.OA2003

Twisted actions and the obstruction to extending unitary representations of subgroups

Astrid an Huef, Iain Raeburn

Suppose that $G$ is a locally compact group and $π$ is a (not necessarily irreducible) unitary representation of a closed normal subgroup $N$ of $G$ on a Hilbert space $H$ . We exte…

math.OA2002

Mansfield's imprimitivity theorem for arbitrary closed subgroups