Institute of Mathematics, Poznan University of Technology, ul. Piotrowo 3a, 60-965 Poznan, Poland ; Institute of Mathematics, Poznan University of Technology, ul. Piotrowo 3a, 60-965 Poznan, Poland
Abstract:
A characterization of -convexity of arbitrary Banach space is given. Moreover, it is proved that the Orlicz-Bochner function space is P-convex if and only if both spaces and are -convex. In particular, the Lebesgue-Bochner space with is -convex iff is -convex.