Resolution of Peller's problem concerning Koplienko-Neidhardt trace formulae

Clément Coine, Christian Le Merdy, Denis Potapov +2

A formula for the norm of a bilinear Schur multiplier acting from the Cartesian product ${\mathcal{S}}^2\times {\mathcal{S}}^2$ of two copies of the Hilbert-Schmidt classes into the trac…