In this paper, we prove two theorems on | A |k, k ≧ 1, summability factors for an infinite series by replacing a Riesz matrix with a lower triangular matrix and using quasi-power-increasing sequences instead of almost increasing sequences. We obtain sufficient conditions for ∑ an λn to be summable | A |k, k ≧ 1, by using quasi-f-increasing sequences.
ASJC Scopus subject areas
- Modelling and Simulation
- Computational Theory and Mathematics
- Computational Mathematics