Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
The paper investigates the closure of the language family defined by input-driven pushdown automata (IDPDA) under the following operations: insertion (Formula presented), deletion (Formula presented), square root (Formula presented), and the first half (Formula presented). For K and L recognized by nondeterministic IDPDA, with m and with n states, respectively, insertion requires mn+2m states, as long as K is well-nested; deletion is representable with 2n states, for well-nested K; square root requires n3-O(n2) states, for well-nested L; the well-nested subset of the first half is representable with 2O(n2) states. Without the well-nestedness constraints, non-closure is established in each case.
Original language | English |
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Title of host publication | Descriptional Complexity of Formal Systems - 20th IFIP WG 1.02 International Conference, DCFS 2018, Proceedings |
Publisher | Springer Nature |
Pages | 224-236 |
Number of pages | 13 |
ISBN (Print) | 9783319946306 |
DOIs | |
State | Published - 1 Jan 2018 |
Event | 20th IFIP WG 1.02 International Conference on Descriptional Complexity of Formal Systems, DCFS 2018 - Halifax, Canada Duration: 25 Jul 2018 → 27 Jul 2018 |
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 10952 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference | 20th IFIP WG 1.02 International Conference on Descriptional Complexity of Formal Systems, DCFS 2018 |
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Country/Territory | Canada |
City | Halifax |
Period | 25/07/18 → 27/07/18 |
ID: 33857063