Equations with a dyck language solution
نویسندگان
چکیده
منابع مشابه
Lexicographical Generation of a Generalized Dyck Language
Given two disjoint alphabets T and T ] and a relation R T T ] , the generalized Dyck language D R over T T ] consists of all words w 2 (T T ]) ? which are equivalent to the empty word " under the congruence deened by x y " mod for all (x; y) 2 R. In this paper we present an algorithm that generates all words of length 2n of the generalized Dyck language lexicograph-ically. Thereby, each Dyck wo...
متن کاملGeneralized Dyck equations and multilabel trees
New topological operations are introduced in order to recover the generalized Dyck equations presented by D. Arquès et al. in another way for the generating functions of maps and colored maps, by decomposing maps topologically and bijectively. By repeatedly applying the operations which made it possible to reveal the generalized Dyck equations for the successive transformed maps, oneto-one corr...
متن کاملEfficiently Computing Edit Distance to Dyck Language
Given a string σ over alphabet Σ and a grammar G defined over the same alphabet, how many minimum number of repairs: insertions, deletions and substitutions are required to map σ into a valid member of G ? We investigate this basic question in this paper for DYCK(s). DYCK(s) is a fundamental context free grammar representing the language of well-balanced parentheses with s different types of pa...
متن کاملRanking and Unranking of a Generalized Dyck Language
Given two disjoint alphabets T and T ] and a relation R T T ] , the generalized Dyck language D R over T T ] consists of all words w 2 (T T ]) ? which are equivalent to the empty word " under the congruence deened by x y " mod for all (x; y) 2 R. If the Dyck words are arranged according to the lexicographical order, then ranking means to determine the rank, i. e. the position, of a Dyck word. U...
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ژورنال
عنوان ژورنال: Information and Control
سال: 1976
ISSN: 0019-9958
DOI: 10.1016/s0019-9958(76)90436-8