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On the sharpness of non-optimal approximation for semigroup operators

โœ Scribed by P. L. Butzer; W. Dickmeis


Publisher
Springer
Year
1985
Tongue
English
Weight
282 KB
Volume
51
Category
Article
ISSN
0025-2611

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๐Ÿ“œ SIMILAR VOLUMES


Optimal and Non-optimal Rates of Approxi
โœ Jung-Chan Chang; Sen-Yen Shaw ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 332 KB

For a general approximation process we formulate theorems concerning rates of convergence, including theorems about saturation class, non-optimal rates, and sharpness of non-optimal convergence. The general results are then applied to n-times integrated semigroups and cosine functions, yielding some