𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Discrete Approximation of Unbounded Operators and Approximation of their Spectra

✍ Scribed by M.P.H Wolff


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
168 KB
Volume
113
Category
Article
ISSN
0021-9045

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Approximation of Unbounded Functions by
✍ H. S. Kasana; H. Sollervall πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 293 KB

## Abstract A unified class of linear positive operators has been defined. Using these operators some approximation estimates have been obtained for unbounded functions. For particular linear positive operators these results sharpen and improve the earlier estimates due to Fuhua Cheng (J. Approx. T

Approximate Wavelets and the Approximati
✍ Vladimir Maz'ya; Gunther Schmidt πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 154 KB

This paper studies approximate multiresolution analysis for spaces generated by smooth functions providing high-order semi-analytic cubature formulas for multidimensional integral operators of mathematical physics. Since these functions satisfy refinement equations with any prescribed accuracy, meth

Approximation of Functions on [βˆ’1,1] and
✍ K. BalΓ‘zs; T. Kilgore πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 241 KB

## Abstract Pointwise estimates are obtained for the simultaneous approximation of a function f Ο΅__C__^__q__^[‐1,1] and its derivatives f^(1)^, …, f^(q)^ by means of an arbitrary sequence of bounded linear projection operators __L__~__n__~ which map __C__[‐1,1] into the polynomials of degree at mos

Constructive approximation of non-linear
✍ Sandberg, Irwin W. πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 117 KB πŸ‘ 2 views

It is known that large classes of approximately-"nite-memory maps can be uniformly approximated arbitrarily well by the maps of certain non-linear structures. As an application, it was proved that time-delay networks can be used to uniformly approximate arbitrarily well the members of a large class