A Failure of Stability Under Complex Interpolation
Canadian journal of mathematics, Tome 29 (1977) no. 6, pp. 1167-1170

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

Let denote the spaces of Bessel potentials as denned and discussed in [6]. When 1 < q < ∞ and α is an integer , the Sobolev space which consists of functions Fin Lq with α derivatives in Lq and with norm If now we make the change of variables x = ev, f(x) = F (In x) it is easily seen that the ratio
Connett, William C.; Schwartz, Alan L. A Failure of Stability Under Complex Interpolation. Canadian journal of mathematics, Tome 29 (1977) no. 6, pp. 1167-1170. doi: 10.4153/CJM-1977-117-9
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