Geodesic
Minimal Rates of Summability
Canadian journal of mathematics, Tome 30 (1978) no. 4, pp. 808-816

Voir la notice de l'article provenant de la source Cambridge University Press

During the early nineteenth century much effort was spent on attempts to find a “universal comparison test“: i.e., a sequence in l1 that dominates every other member of l1. The nonexistence of such a series converging at a minimal rate was demonstrated by Abel, et al. [1; 4; 7; 9, pp. 298-304]. 
Fridy, J. A. Minimal Rates of Summability. Canadian journal of mathematics, Tome 30 (1978) no. 4, pp. 808-816. doi: 10.4153/CJM-1978-069-7
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