# Seminar at SMU Delhi

March 4, 2015 (Wednesday) , 3:30 PM at Webinar
Speaker: K. B. Sinha, JNCASR, Bengaluru
Title: Helton-Howe and Krein Trace Formulas
Abstract of Talk
Krein's formula gives an expression for the trace of the difference of a function of a self-adjoint operator and its perturbation by the addition of a trace-class operator , while that due to Helton and Howe deals with the trace of the commutator of functions of a hyponormal operator and its adjoint . The impact of Krein's theorem on the derivation of the Helton-Howe formula will be discussed .