Sujit Sakharam Damase

activity

20242026

collaborators

5 papers

math.ST2026

On positive definite thresholding of correlation matrices

Sujit Sakharam Damase, James Eldred Pascoe

Standard thresholding techniques for correlation matrices often destroy positive semidefiniteness. We investigate the construction of positive definite functions that vanish on spe…

math.FA2026

Complete discrete Schoenberg-Delsarte theory for homogeneous spaces

Sujit Sakharam Damase, James Eldred Pascoe

We develop a theory of partially defined complete positivity preservers, extending Schoenberg's classical characterization to functions defined only on discrete subsets or constrai…

math.FA2025

Numerical radius and $ℓ_{p}$ operator norm of Kronecker products and Schur powers: inequalities and equalities

Pintu Bhunia, Sujit Sakharam Damase, Apoorva Khare

Suppose $A = [a_{ij}] \in M_{n} (C)$ is a complex $n \times n$ matrix and $B \in B (H)$ is a bounded linear operator on a complex Hilbert space $\mat…

math.FA2025

A remark on characterizing inner product spaces via strong three-point homogeneity

Sujit Sakharam Damase, Apoorva Khare

We show that a normed linear space is isometrically isomorphic to an inner product space if and only if it is a strongly $n$ -point homogeneous metric space for any (or every) $n \g…

math.FA2024

Multivariate transforms of total positivity