## Fractional integration on the space H$$^1$$ and its dual.(English)Zbl 0269.44012

### MSC:

 26A33 Fractional derivatives and integrals 42B25 Maximal functions, Littlewood-Paley theory 46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems 47Gxx Integral, integro-differential, and pseudodifferential operators
Full Text: