3 citations · 4 across the 24 of their papers we have counts for
5 papers · 1 filter
Commutants and Complex Symmetry of Finite Blaschke Product Multiplication Operator in $\bm{L^2(\T)}$
Arup Chattopadhyay, Soma Das
Consider the multiplication operator in $L^2(\T)$, where the symbol is a finite Blaschke product. In this article, we characterize the commutant of in $L^2(\T)$…
Characterization of C-Symmetric Toeplitz operators for a Class of Conjugations in Hardy Spaces
Arup Chattopadhyay, Soma Das, Chandan Pradhan +1
In this article, we introduce a new class of conjugations in the scalar valued Hardy space and provide a characterization of a complex symmetric Toep…
Higher-order spectral shift for pairs of contractions via multiplicative path
Arup Chattopadhyay, Chandan Pradhan
In \cite{Mor}, Marcantognini and Morán obtained Koplienko-Neidhardt trace formula for pairs of contractions and pairs of maximal dissipative operators via multiplicative path. In t…
Second order trace formulae
Arup Chattopadhyay, Soma Das, Chandan Pradhan
Koplienko \cite{Ko} found a trace formula for perturbations of self-adjoint operators by operators of Hilbert-Schmidt class . Later, Neidhardt introduce…
Trace formula for contractions and it's representation in
Arup Chattopadhyay, Kalyan B. Sinha
The aim of this article is twofold: give a short proof of the existence of real spectral shift function and the associated trace formula for a pair of contractions, the difference…