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Inclusion sets of regular summability matrices. III

Published online by Cambridge University Press:  24 October 2008

J. W. Baker
Affiliation:
University College, Swansea, and University of Canterbury, Christchurch
G. M. Petersen
Affiliation:
University College, Swansea, and University of Canterbury, Christchurch

Extract

Let A = (am, n) be a (regular summability) matrix. Then will denote the set of bounded sequences which are summed by A. If {Ai} (i = 1, 2, …, N) is a finite set of such matrices, and if consists of every bounded sequence then we shall say that the matrices span the bounded sequences. Ifx = {xn} belongs to then we denote the value to which A sums x by A-lim x. If y = {yn} is any sequence, then the A-transform of y (if it exists) is the sequence {Aμ(y)}, where

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1966

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References

REFERENCES

(1)Baker, J. W. and Petersen, G. M.Inclusion of sets of regular summability matrices. Proc. Cambridge Philos. Soc. 60 (1964), 705712.CrossRefGoogle Scholar
(2)Baker, J. W. and Petersen, G. M.Inclusion of sets of regular summability matrices. II. Proc. Cambridge Philos. Soc. 61 (1965), 381394.CrossRefGoogle Scholar
(3)Hardy, G. H.Divergent series (Oxford, 1949).Google Scholar
(4)Lorentz, G. G. and Zeller, K.Über paare von Limitierungsverfahren. Math. Z. 68 (1958), 428438.CrossRefGoogle Scholar
(5)Petersen, G. M.On pairs of summability matrices. Quart. J. Math. Oxford Ser. (2), 16 (1965), 7276.CrossRefGoogle Scholar