Non-Gödel Negation Makes Unwitnessed Consistency Undecidable
Non-Gödel Negation Makes Unwitnessed Consistency Undecidable
复制标题
非哥德尔否定使得无人见证的一致性无法判定
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
R. Peñaloza
中科院分区:
文献类型:
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作者:
Stefan Borgwardt;R. Peñaloza
Recent results show that ontology consistency is undecidable for a wide variety of fuzzy Description Logics (DLs). Most notably, undecidability arises for a family of inexpressive fuzzy DLs using only conjunction, existential restrictions, and residual negation, even if the ontology itself is crisp. All those results depend on restricting reasoning to witnessed models. In this paper, we show that ontology consistency for inexpressive fuzzy DLs using any t-norm starting with the Łukasiewicz t-norm is also undecidable w.r.t. general models.