3 papers
math.FA2026
Conference signals: Applications, existence, and constructions
Kean Fallon, Joseph W. Iverson
A conference signal is a complex-valued function on a finite abelian group that vanishes at 0 in both the time and frequency domains, and is otherwise flat in both domains. For exa…
math.FA2026
Approximation theorems in bilipschitz invariant theory
Jameson Cahill, Joseph W. Iverson, Dustin G. Mixon +1
Bilipschitz invariant theory concerns low-distortion embeddings of orbit spaces into Euclidean space. To date, embeddings with the smallest-possible distortion are known for only a…
math.MG2023
On the optimal arrangement of lines in
Kean Fallon, Joseph W. Iverson
We show the optimal coherence of lines in is given by the Welch bound whenever a skew Hadamard of order exists. Our proof uses a variant of Hadamard dou…