Full paper in PDF:
$% F. Cobos, Real interpolation and compactness, Rev. Mat. Univ. Complut. Madrid
2 (1989), supplementary, 93–101.%$
Real Interpolation and Compactness
The behavior of compactness under real interpolation real is discussed. Classical results due to Krasnosel’skii, Lions-Peetre, Persson, and Hayakawa are described, as well as others obtained very recently by Edmunds, Potter, Fernández, and the author.
1980 Mathematics Subject Classification (1985 revision): 46M35, 47B045.