Finite Antichain Cutsets in Posets

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作者
李伯渝
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[1] Department of Mathematics
[2] Northwestern
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<正> In 1985 I.Rival and N.Zaguia conjectured that in a chain complete poset havingthe finite cutset property every element belongs to an antichain cutset iff there is no alternating-covercycle.In this paper a counterexample is given to show that the condition that there is noalternating-cover cycle is not sufficient and other two conditions on generalized alternating-cover pathsare added to complete the characterization.
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页码:51 / 61
页数:11
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