In this talk are given the classical deinition of Morrey Spaces $L^{p,\lambda}$, the main properties of them and a lots of example and counterexample highlight some qualities of functions belong to the spaces $L^{p,\lambda}$. Also, some negative properties of extra-integrability are showed. Moreover, we study the relations between two Morrey Spaces and the comparison between Morrey class with other functional spaces.
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