Separably Injective Banach Spaces
Antonio Avilés
form x D sÁ C xÁ with sÁ 2 SÁ and xÁ 2 E.Á/. Notice that now xÁ C sı 2 ZÁ, so
since we have a push-out diagram for x Á C s2 ZÁ and sÁ 2 SÁ, we can find rÁ 2
RÁ such that ksÁ C x Á C sk > kxÁ C s C rÁ kCks Á rÁk "=2: Since Á2 and is ...