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math.OA2024
Rigid Graph Products
Matthijs Borst, Martijn Caspers, Enli Chen
We prove rigidity properties for von Neumann algebraic graph products. We introduce the notion of rigid graphs and define a class of II-factors named .…
math.CA2024
On the best constants of Schur multipliers of second order divided difference functions
Martijn Caspers, Jesse Reimann
We give a new proof of the boundedness of bilinear Schur multipliers of second order divided difference functions, as obtained earlier by Potapov, Skripka and Sukochev in their pro…