Ritu Duhan

collaborators

3 papers

math.FA2026

Pure matrix states on block Toeplitz matrices

Tirthankar Bhattacharyya, Ritul Duhan

Let $T_{n, m} = T_{n} (M_{m} (C))$ denote the operator system of all block Toeplitz matrices $T = ((T_{i - j}))_{i, j = 1}^{n}$ with entries $T_k \in M_m(\mathbb C)…

math.OA2026

Pure UCP Maps on Finite Toeplitz Systems and Quantum Gromov--Hausdorff Convergence

Ritul Duhan, Abhay Jindal

We study pure unital completely positive maps on the finite Toeplitz operator system $T_{d}$ of $d \times d$ Toeplitz matrices. Our first main result gives an explicit characteriz…

math.OA2025

Gromov-Hausdorff convergence of metric spaces of UCP maps

Tirthankar Bhattacharyya, Ritul Duhan, Chandan Pradhan

It is shown that van Suijlekom's technique of imposing a set of conditions on operator system spectral triples ensures Gromov-Hausdorff convergence of sequences of sets of unital c…