Transversals of families in complete lattices,and torsion in product modules |
| |
Authors: | George M. Bergman Fred Galvin |
| |
Affiliation: | (1) Department of Mathematics, University of California, 94720 Berkeley, CA, U.S.A.;(2) Department of Mathematics, University of Kansas, 66045 Lawrence, KS, U.S.A. |
| |
Abstract: | Suppose L is a complete lattice containing no copy of the power-set 2 and no uncountable well-ordered chains. It is shown that for any family of nonempty subsets , one can choose elements pi Xi so that Api majorizes all elements of all but finitely many of the Xi. Ring-theoretic consequences are deduced: for instance, the direct product of a family of torsion modules over a commutative Noetherian integral domain R is torsion if and only if some element of R annihilates all but finitely many of the modules. |
| |
Keywords: | Primary: 06A23, 13C12, 13E05, 16A63 secondary: 06A12, 08B20, 08B25, 13L05, 16A33 |
本文献已被 SpringerLink 等数据库收录! |
|