- very strong summability
- очень сильная суммируемость
English-Russian scientific dictionary. 2008.
very strong summability
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Riesz mean — In mathematics, the Riesz mean is a certain mean of the terms in a series. They were introduced by Marcel Riesz in 1911 as an improvement over the Cesàro meanref|Rie11ref|Hard16. The Riesz mean should not be confused with the Bochner Riesz mean… … Wikipedia
History of Grandi's series — Geometry and infinite zerosGrandiGuido Grandi (1671 – 1742) reportedly provided a simplistic account of the series in 1703. He noticed that inserting parentheses into nowrap|1=1 − 1 + 1 − 1 + · · · produced varying results: either:(1 1) + (1 1) + … Wikipedia
