Peter Vang Uttenthal

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math.RT2026

Covers of Bruhat-Tits trees

Corina Ciobotaru, Peter Vang Uttenthal

Let $G$ be a locally compact group and let $G$ be a central extension that splits over a maximal compact subgroup $K$ of $G$ . We derive an explicit cocycle that lifts t…

math.RT2025

Whitney extensions on symmetric spaces

Birgit Speh, Peter Vang Uttenthal

In 1934, H. Whitney introduced the problem of extending a function on a set of points in $R^{n}$ to an analytic function on the ambient space. In this article we prove Whitn…