Geodesic
A Summability Problem
Canadian mathematical bulletin, Tome 23 (1980) no. 4, pp. 421-424

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

In a paper by Wilansky and the writer [4] there were five questions left open, four of which have been answered by Beekman and the writer, [1], [3]. We shall consider the fifth one, namely, “If , must for every matrix D with cD = cA?” Here A is a conservative summability matrix with column limits . 
Macphail, M. S. A Summability Problem. Canadian mathematical bulletin, Tome 23 (1980) no. 4, pp. 421-424. doi: 10.4153/CMB-1980-061-1
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[1] 1. Beekman, W., Ùber einige Limitierungstheoretische Invarianten, Math. Z. 150 (1976), 195-199. Google Scholar

[2] 2. Bennett, G., Distinguished subsets and summability invariants, Studia Math. 40 (1971), 225-234. Google Scholar

[3] 3. Macphail, M. S., Summability invariants, Math. Z. 153 (1977), 99-100. Google Scholar

[4] 4. Macphail, M. S. and Wilansky, A., Linear junctionals and summability invariants, Canad. Math. Buli. 17 (1974), 233-242. Google Scholar

[5] 5. Wilansky, A., Distinguished subsets and summability invariants, J. Analyse Math. 12 (1964), 327-350. Google Scholar

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