Abstract | ||
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The paper investigates complexity and decidability questions for two restricted classes of picture languages, called three-way picture languages and stripe picture languages. It is shown that (1) the picture membership problem can be solved in deterministic polynomial time for three-way context-free picture languages, (2) the equivalence and containment problems for picture languages are undecidable for a regular language L 1 and a linear language L 2 , where both L 1 and L 2 describe three-way stripe picture languages, and (3) the intersection emptiness problem for picture languages is undecidable for two three-way stripe linear picture languages and is also undecidable for a regular language L 1 and a linear language L 2 , where L 1 describes a three-way stripe picture language and L 2 describes a stripe picture language. |
Year | DOI | Venue |
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1990 | 10.1016/0304-3975(90)90180-P | Theor. Comput. Sci. |
Keywords | DocType | Volume |
restricted class,picture language | Journal | 73 |
Issue | ISSN | Citations |
3 | Theoretical Computer Science | 13 |
PageRank | References | Authors |
0.92 | 7 | 1 |
Name | Order | Citations | PageRank |
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Changwook Kim | 1 | 109 | 11.88 |