文摘
We study smoothness spaces of Morrey type on R n and characterise in detail those situations when such spaces of type A p,q s,τ (R n ) or A u,p,q s (R n ) are not embedded into L ∞(R n ). We can show that in the so-called sub-critical, proper Morrey case their growth envelope function is always infinite which is a much stronger assertion. The same applies for the Morrey spaces M u,p (R n ) with p < u. This is the first result in this direction and essentially contributes to a better understanding of the structure of the above spaces.