On the mixed $({\ell }_1,{\ell }_2)$-Littlewood inequalities and interpolation

Mariana Maia, Joedson Santos

It is well-known that the optimal constant of the bilinear Bohnenblust--Hille inequality (i.e., Littlewood's $4/3$ inequality) is obtained by interpolating the bilinear mixed $\lef…