On an extension of a bilinear functional on Lp(Rd)⊗E to a Bochner space with an application to velocity averaging
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We examine necessary and sufficient conditions under which a continuous bilinear functional B on Lp(Rd)⊗E, p>1, E being a separable Banach space, can be continuously extended to a linear functional on Lp(Rd;E). The extension enables a generalisation of the H-distribution concept, allowing us to obtain a (heterogeneous) velocity averaging result in the Lp framework for any p>1. © 2013 Académie des sciences.