𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On Exact Values of n-Widths in a Hilbert Space

✍ Scribed by Georgii G Magaril-Il'yaev; Konstantin Yu Osipenko; Vladimir M Tikhomirov


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
178 KB
Volume
108
Category
Article
ISSN
0021-9045

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Exact Values of N-Widths and Optimal Qua
✍ K.Y. Osipenko 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 419 KB

In this paper we find some exact values of \(n\)-widths in the integral metric with the Chebyshev weight function for the classes of functions that are bounded and analytic or harmonic in the interior of the ellipse with foci \(\pm 1\) and sum of semiaxes \(c\). We also construct optimal quadrature

Spaces of Compact Operators on a Hilbert
✍ Patrick N. Dowling; Narcisse Randrianantoanina 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 111 KB

Every non-reflexive subspace of K(H), the space of compact operators on a Hilbert space H, contains an asymptotically isometric copy of c 0 . This, along with a result of Besbes, shows that a subspace of K(H) has the fixed point property if and only if it is reflexive.

On the molecular microstructure dependen
✍ Guarrotxena, N.; Vella, N.; Toureille, A.; Millán, J. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 287 KB 👁 2 views

The space charges trapped after applying a strong electrical Ðeld have been measured using the thermal step (TS) method for a series of poly(vinylchloride) (PVC) samples di †ering in their tacticity-induced molecular microstructure. This has been controlled chemically (stereospeciÐc substitution rea