תקציר
This article is a part of the theory developed by the author in which the following problem is solved under natural assumptions: to find necessary and sufficient conditions under which the union of at most countable family of algebras on a certain set X is equal to (Formula presented.). Here the following new result is proved. Let (Formula presented.) be a finite collection of algebras of sets given on a set X with (Formula presented.), and for each λ there exist at least (Formula presented.) pairwise disjoint sets belonging to (Formula presented.). Then there exists a family (Formula presented.) of pairwise disjoint subsets of (Formula presented.) except the case (Formula presented.); and for each λ the following holds: if (Formula presented.) and Q contains one of the two sets (Formula presented.), and its intersection with the other set is empty, then (Formula presented.).
שפה מקורית | אנגלית |
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כתב עת | Journal of Inequalities and Applications |
כרך | 2015 |
מספר גיליון | 1 |
מזהי עצם דיגיטלי (DOIs) | |
סטטוס פרסום | פורסם - 1 דצמ׳ 2015 |