Let T = (tm,J (m, n = I, 2 ,...; all t,,, , > 0) define a regular summability method. It is known [l] that there is a bounded divergent sequence whose T-transform is also divergent. Here we point out that one can say more: namely, that for some real, bounded, divergent sequence {a,}~=, , its T-trans
On Scales of Summability Methods
✍ Scribed by Rüdiger Kiesel
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 402 KB
- Volume
- 176
- Category
- Article
- ISSN
- 0025-584X
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✦ Synopsis
In this paper we consider generalized Norlund methods (Nap), a > -1, power series methods (J,) and the iteration product of two such methods. A particular case is that of the Cesaro means (C,) with corresponding power series method (A), i.e., Abel's method. We obtain generalizations of inclusion, and tauberian and convexity theorems which are well-known for the Cesaro-Abel case, for a rich class of methods of the above type.
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