A strong-Riesz mean-value theorem with applications to summability factor theorems.
A study of some new absolute summability methods.
A study on almost increasing sequences.
A summability integral.
A Tauberian theorem for Abelian summability methods.
A tauberian theorem for Cesàro summability
A theorem on generalized absolute Riesz summability
A theorem on the absolute Riesz summability factors of a Fourier series
Abschnittskonvergenz und Umkehrsätze beim Euler-Verfahren.
Absolute Cesaro Summability and Absolute Convergence for Starlike Univalent Functions.
Absolute Cesàro summability of infinite series
Absolute Nörlund summability factors.
Absolute Nörlund summability factors of power series and Fourier series
Four theorems of Ahmad [1] on absolute Nörlund summability factors of power series and Fourier series are proved under weaker conditions.
Absolute Nörlund summability factors of power series and Fourier series
Accelero-summation of the formal solutions of nonlinear difference equations
In 1996, Braaksma and Faber established the multi-summability, on suitable multi-intervals, of formal power series solutions of locally analytic, nonlinear difference equations, in the absence of “level ”. Combining their approach, which is based on the study of corresponding convolution equations, with recent results on the existence of flat (quasi-function) solutions in a particular type of domains, we prove that, under very general conditions, the formal solution is accelero-summable. Its sum...
Addendum to: Iteration Products of Methods of Summability and Natural Scales.
Addition au mémoire sur les séries divergentes
Almost none of the sequences of 0's and 1's are almost convergent.
An Extension of Cauchy's Criterion to Nörlund Summability.
An extension of the Rogosinski-Bernstein summability methods