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@Academia_carnet @CariouK @ffigon @CP_Cnu On parle de M. Riesz (Riesz-Thorin et pas Riesz-Frechet). And to end a day that started with a thread on PDEs, https://t.co/cYnTWcxHta, which rightfully says that Riesz jump started PDEs in Lund, and offers a lumin