|
Diameters of certain sets in function spaces
Yu. I. Grigoryan Erevan Polytechnic Institute
Abstract:
The precise values of the diameters (according to A. N. Kolmogorov) of the class $H_C^\omega$ in the space $C[a,b]$ and lower bounds for the diameters of the class $H_p^\omega$ in the spaces $\widetilde {L_p}(o,2\pi)$ ($1\le p\le\infty$), for any modulus of continuity $\omega(\delta)$, are obtained. The latter bounds give the exact values of the odd-numbered diameters of the class $H_2^{1/2}=H_2^{\delta^{1/2}}$ and the exact order of decay of the diameters of the class $H_1^\omega$.
Received: 10.11.1971
Citation:
Yu. I. Grigoryan, “Diameters of certain sets in function spaces”, Mat. Zametki, 13:5 (1973), 637–646; Math. Notes, 13:5 (1973), 383–388
Linking options:
https://www.mathnet.ru/eng/mzm7167 https://www.mathnet.ru/eng/mzm/v13/i5/p637
|
Statistics & downloads: |
Abstract page: | 187 | Full-text PDF : | 81 | First page: | 1 |
|