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Iterated perfect-set forcing

โœ Scribed by James E. Baumgartner; Richard Laver


Publisher
Elsevier Science
Year
1979
Weight
613 KB
Volume
17
Category
Article
ISSN
0003-4843

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๐Ÿ“œ SIMILAR VOLUMES


Regular Perfect Systems of Sets of Itera
โœ G.M. Hamilton; I.T. Roberts; D.G. Rogers ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 192 KB

For s โ‰ฅ 2, a set {a(i, j) : 1 โ‰ค j โ‰ค s + 1i โ‰ค s} where a(1, j), 1 โ‰ค j โ‰ค s, are some prescribed integers and a(i + 1, j) = |a(i, j)a(i, j + 1)|, for 1 โ‰ค i < s and 1 โ‰ค j โ‰ค si, is called a set of iterated differences. Such a set has size s and is full if it contains s(s + 1)/2 distinct integers. Krewera

Perfect addition sets
โœ John R. Isbell ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 553 KB