Geodesic
On an Interpolation Theorem of Zygmund and Koizumi
Canadian mathematical bulletin, Tome 13 (1970) no. 2, pp. 221-226

Voir la notice de l'article provenant de la source Cambridge University Press

Let (X, , μ) and (Y, , ν) be two σ-finite measure spaces. An operator T, defined by h = Tf, which maps functions on X into functions on Y is called quasilinear if T(f+g) is uniquely defined whenever Tf and Tg are defined, and if 1.1 where is independent of f and g. If the operator T is called sublinear. 
Heinig, H. P. On an Interpolation Theorem of Zygmund and Koizumi. Canadian mathematical bulletin, Tome 13 (1970) no. 2, pp. 221-226. doi: 10.4153/CMB-1970-045-3
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[3] 3. Zygmund, A., Trigonometric series, Cambridge Univ. Press, Vol. I, II, 1959. Google Scholar

[4] 4. Zygmund, A., On a theorem of Marcinkiewicz concerning interpolation of operations, J. de Math. 35 (1956), 223-248. Google Scholar

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