Necessary and sufficient conditions for matrix summability methods to be stronger than multisummability
Copyright policy )Necessary and sufficient conditions for matrix summability methods to be stronger than multisummability
For general matrix summability methods, we find necessary and sufficient conditions for such methods to be stronger than multisummability. In a second part we show the existence of power series which are not multisummable but can be summed by a matrix method satisfying the conditions mentioned above
multisummability, matrix methods, Analytical theory of ordinary differential equations: series, transformations, transforms, operational calculus, etc., general matrix summability methods, power series, Inclusion and equivalence theorems in summability theory
multisummability, matrix methods, Analytical theory of ordinary differential equations: series, transformations, transforms, operational calculus, etc., general matrix summability methods, power series, Inclusion and equivalence theorems in summability theory
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