Bappa Bisai

collaborators

3 papers

math.FA2022

A generalization of Ando's dilation, and isometric dilations for a class of tuples of $q$ -commuting contractions

Sibaprasad Barik, Bappa Bisai

Given a bounded operator $Q$ on a Hilbert space $H$ , a pair of bounded operators $(T_{1}, T_{2})$ on $H$ is said to be $Q$ -commuting if one of the following holds:…

math.FA2022

On $q$ -commuting co-extensions and $q$ -commutant lifting

Bappa Bisai, Sourav Pal, Prajakta Sahasrabuddhe

Consider a nonzero contraction $T$ and a bounded operator $X$ satisfying $T X = q X T$ for a complex number $q$ . There are some interesting results in the literature on $q$ -commuting di…

math.FA2019

Structure theorems for operators associated with two domains related to $μ$ -synthesis

Bappa Bisai, Sourav Pal

A commuting tuple of $n$ operators $(S_{1}, \dots, S_{n - 1}, P)$ defined on a Hilbert space $H$ , for which the closed symmetrized polydisc \[ Γ_n = \left\{ \left(\sum_{i=1}^…

A generalization of Ando's dilation, and isometric dilations for a class of tuples of q-commuting contractions

On q-commuting co-extensions and q-commutant lifting

Structure theorems for operators associated with two domains related to μ-synthesis

A generalization of Ando's dilation, and isometric dilations for a class of tuples of $q$ -commuting contractions

On $q$ -commuting co-extensions and $q$ -commutant lifting

Structure theorems for operators associated with two domains related to $μ$ -synthesis