書誌事項
- タイトル
- On Word and Frontier Languages of Unsafe Higher-Order Grammars
- 著者
- Kazuyuki Asada、Naoki Kobayashi
説明
Higher-order grammars are extensions of regular and context-free grammars, where non-terminals may take parameters. They have been extensively studied in 1980's, and restudied recently in the context of model checking and program verification. We show that the class of unsafe order-(n+1) word languages coincides with the class of frontier languages of unsafe order-n tree languages. We use intersection types for transforming an order-(n+1) word grammar to a corresponding order-n tree grammar. The result has been proved for safe languages by Damm in 1982, but it has been open for unsafe languages, to our knowledge. Various known results on higher-order grammars can be obtained as almost immediate corollaries of our result.
収録刊行物
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- Proceedings of ICALP 2016
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Proceedings of ICALP 2016 - 2016
arXiv
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キーワード
詳細情報 詳細情報について
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- CRID
- 1010282257410869384
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- 資料種別
- journal article
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- データソース種別
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- KAKEN
- OpenAIRE
- Crossref