1 citations · 1 across the 3 of their papers we have counts for
4 papers
A generalization of Ando's dilation, and isometric dilations for a class of tuples of -commuting contractions
Sibaprasad Barik, Bappa Bisai
Given a bounded operator on a Hilbert space , a pair of bounded operators on is said to be -commuting if one of the following holds:…
Isometric dilations of commuting contractions and Brehmer positivity
Sibaprasad Barik, B. Krishna Das
It is well-known that an -tuple of commuting contractions does not posses an isometric dilation, in general. Considering a class of -tuple of commuting contraction…
Commutant lifting in several variables
Sibaprasad Barik, Monojit Bhattacharjee, B. Krishna Das
In this article we study commutant lifting, more generally intertwining lifting, for different reproducing kernel Hilbert spaces over two domains in , namely the unit…
Isometric dilations and von Neumann inequality for finite rank commuting contractions
Sibaprasad Barik, B. Krishna Das, Jaydeb Sarkar
Motivated by Ball, Li, Timotin and Trent's Schur-Agler class version of commutant lifting theorem, we introduce a class, denoted by , of -tuples of c…