Samya Kumar Ray

activity

20162026

most citedMaximal ergodic inequalities for some positive operators on noncommutative

L_{p}

-spaces

4 citations · 8 across the 16 of their papers we have counts for

collaborators

Showing 2026 · math.FAShow all

3 papers · 2 filters

math.FA2026

Unique operator space structures on a family of two dimensional Banach spaces

Samya Kumar Ray

For $0 < θ < π$ , let $K_{θ} = {e^{i s} : ∣ s ∣ \leq θ}$ and $E_{θ} = span_{C} {1, z} \subset C (K_{θ})$ . We prove that every contractive linear map from $E_{θ}$ into $B (H)$ …

math.FA2026

Failure of Rational Dilation on the Tetrablock via Parrott Homomorphisms

Shubhankar Mandal, Samya Kumar Ray

We determine the cotangent operator space structure at the origin of the tetrablock (denoted by $E$ ). In particular we prove that $\operatorname{COT}_0(\overline{\mathbb E}…

math.FA2026

Extreme points, positive Grothendieck constants and tensor product norms

Rajeev Gupta, Arpita Mal, Gadadhar Misra +1

We study several interrelated problems arising from the interplay between extreme point theory, Grothendieck-type inequalities, and tensor product norms. We develop a general frame…