Abstract We show that, for several function Banach spaces, multiplication considered as a bilinear continuous surjection is an open mapping. In particular, we prove that multiplication from Lp×Lq to ...
Dans le cadre de la convolution de Dirichlet des fonctions arithmétiques, R. Vaidyanathaswamy a obtenu en 1931 une formule de calcul de Æ’(mn) valable pour toute fonction multiplicative Æ’ et tout ...
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