activity
20172026
most citedThe exact constant for the norm inequality

2 citations · 6 across the 9 of their papers we have counts for

collaborators

10 papers

math.FA2026

On phase and norm retrieval by subspaces

Tin T. Tran, Phung T. Huynh

This paper studies phase and norm retrieval by subspaces. We first investigate norm retrieval by hyperplanes. We show that if hyperplanes $\{φ_i^\perp\}_{i=1}^N\subset \mathbb{…

math.FA2022

Remarks on scalable frames

Peter G. Casazza, Laura De Carli, Tin T. Tran

This paper investigates scalable frame in . We define the reduced diagram matrix of a frame and use it to classify scalability of the frame under some conditions. We…

math.FA2022★ 1 cited

Piecewise scalable frames

Peter G. Casazza, Laura De Carli, Tin T. Tran

In this paper we define "piecewise scalable frames". This new scaling process allows us to alter many frames to Parseval frames which is impossible by the previous standard scaling…

math.FA2022

The core of a Grassmannian frame

Peter G. Casazza, Ian Campbell, Tin T. Tran

Let be a set of unit vectors in $\RR^n$. The coherence of is $\coh(X):=\max_{i\not=j}|\langle x_i, x_j\rangle|$. A vector is said to be isolable if…

math.FA2019

A notion of optimal packings of subspaces with mixed-rank and solutions

Peter G. Casazza, John I. Haas, Joshua Stueck +1

We resolve a longstanding open problem by reformulating the Grassmannian fusion frames to the case of mixed dimensions and show that this satisfies the proper properties for the pr…

math.FA2019

Regular two distance sets

Peter G. Casazza, Tin T. Tran, Janet C. Tremain

This paper makes a deep study of regular two-distance sets. A set of unit vectors in Euclidean space $\RR^n$ is said to be regular two-distance set if the inner product of any…