Full paper in PDF:
$%E. Pustylnik, Real interpolation for nondistant Marcinkiewicz spaces, Rev. Mat. Complut. 14
(2001), no. 1, 127–143.%$


ABSTRACT
We describe the real interpolation spaces between given Marcinkiewicz spaces that have fundamental functions of the form t^{1/q}^{} with the same exponent q. The spaces thus obtained are used for the proof of optimal interpolation theorem from Pustylnik (1999), concerning spaces L_{,,E}.
Key words: weak type interpolation, optimal interpolation, spaces of LorentzZygmund type.
2000 Mathematics Subject Classification: 46B70, 46E30.