1 citations · 1 across the 6 of their papers we have counts for
9 papers
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…
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…
Koplienko-Neidhardt trace formula for unitaries A new proof
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 in 1988, a similar f…
Study of nearly invariant subspaces with finite defect in Hilbert spaces
Arup Chattopadhyay, Soma Das
In this article, we briefly describe nearly invariant subspaces with finite defect for a shift operator having finite multiplicity acting on a separable Hilbert space…
Almost invariant subspaces of the shift operator on vector-valued Hardy spaces
Arup Chattopadhyay, Soma Das, Chandan Pradhan
In this article, we characterize nearly invariant subspaces of finite defect for the backward shift operator acting on the vector-valued Hardy space which is a vectorial generaliza…