On Computing the Size of a Lattice and Related Decision Problems

被引：0
|
作者：
Sergei O. Kuznetsov
机构：
[1] Technische Universität Dresden,Institut für Algebra
[2] All-Russia Institute for Scientific and Technical Information (VINITI),undefined
来源：
Order | 2001年 / 18卷
关键词：
lattices & related structures;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The problem of determining the size of a finite concept lattice is shown to be #P-complete. Since any finite lattice can be represented as a concept lattice, the problem of determining the size of a lattice given by the ordered sets of its irreducibles is also #P-complete. Some results about NP-completeness or polynomial tractability of decision problems related to concepts with bounded extent, intent, and the sum of both are given. These problems can be reformulated as decision problems about lattice elements generated by a certain amount of irreducibles.
引用
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页码：313 / 321
页数：8
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