39 citations · 46 across the 15 of their papers we have counts for
5 papers · 1 filter
Dimension-counting bounds for equi-isoclinic subspaces
Joseph W. Iverson, Kaysie Rose O
We make four contributions to the theory of optimal subspace packings and equi-isoclinic subspaces: (1) a new lower bound for block coherence, (2) an exact count of equi-isoclinic…
Radon-Hurwitz Grassmannian codes
Matthew Fickus, Enrique Gomez-Leos, Joseph W. Iverson
Every equi-isoclinic tight fusion frame (EITFF) is a type of optimal code in a Grassmannian, consisting of subspaces of a finite-dimensional Hilbert space for which the smallest pr…
Group-invariant max filtering
Jameson Cahill, Joseph W. Iverson, Dustin G. Mixon +1
Given a real inner product space and a group of linear isometries, we construct a family of -invariant real-valued functions on that we call max filters. In the case…
Harmonic Grassmannian codes
Matthew Fickus, Joseph W. Iverson, John Jasper +1
An equi-isoclinic tight fusion frame (EITFF) is a type of Grassmannian code, being a sequence of subspaces of a finite-dimensional Hilbert space of a given dimension with the prope…
A note on tight projective 2-designs
Joseph W. Iverson, Emily J. King, Dustin G. Mixon
We study tight projective 2-designs in three different settings. In the complex setting, Zauner's conjecture predicts the existence of a tight projective 2-design in every dimensio…