Cwikel, Michael; Keich, Uri Optimal decompositions for the \(K\)-functional for a couple of Banach lattices. (English) Zbl 1028.46034 Ark. Mat. 39, No. 1, 27-64 (2001). Reviewer: Neculai Papaghiuc (Iaşi) MSC: 46B70 46E30 PDF BibTeX XML Cite \textit{M. Cwikel} and \textit{U. Keich}, Ark. Mat. 39, No. 1, 27--64 (2001; Zbl 1028.46034) Full Text: DOI
Ericsson, Stefan Exact descriptions of some \(K\) and \(E\) functionals. (English) Zbl 0885.46016 J. Approximation Theory 90, No. 1, 75-87 (1997). Reviewer: H.Triebel (Jena) MSC: 46B70 46M35 46E35 46E30 46A40 PDF BibTeX XML Cite \textit{S. Ericsson}, J. Approx. Theory 90, No. 1, 75--87 (1997; Zbl 0885.46016) Full Text: DOI