16 citations · 60 across the 17 of their papers we have counts for
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math.FA2021★ 4 cited
On sufficient density conditions for lattice orbits of relative discrete series
Ulrik Enstad, Jordy Timo van Velthoven
This note provides new criteria on a unimodular group and a discrete series representation of formal degree under which any lattice wit…
math.FA2021★ 9 cited
Smooth lattice orbits of nilpotent groups and strict comparison of projections
Erik Bédos, Ulrik Enstad, Jordy Timo van Velthoven
This paper provides sufficient density conditions for the existence of smooth vectors generating a frame or Riesz sequence in the lattice orbit of a square-integrable projective re…
math.OA2021★ 14 cited
The density theorem for projective representations via twisted group von Neumann algebras
Ulrik Enstad
We consider converses to the density theorem for irreducible, projective, unitary group representations restricted to lattices using the dimension theory of Hilbert modules over tw…