In this work we study the following implication problem for regular expressions: "Given a set of regular expressions R and a regular expression S, is it true that every string which matches the regular expressions in R also matches S?" The problem comes in two flavors: "non-disjoint" and ...
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About Regular Expressions in Maple This document explains the regular expression syntax accepted by the Maple StringTools package. Regular expression support in StringTools is based on the POSIX 1003.2 standard for extended modern regular expressions...
Formalized MathematicsMichał Trybulec. Regular expression quantifiers - m to n occurrences. MML, (5.4.1165):7161-7166. MML id.: FLANG 2.Michal Trybulec. Regular expression quantifiers - m to n occurrences. Formalized Math- ematics, 15(2):53-58, 2007.Michał Trybulec. Regular expression...
Formalized MathematicsMichal Trybulec. Regular expression quantifiers - m to n occurrences. Formalized Math- ematics, 15(2):53-58, 2007.Michał Trybulec. Regular expression quantifiers - m to n occurrences. MML...
Decimal = (sign)?(digit)+ Identifier = (letter)(letter | digit)* The only problem left with the lexical analyzer is how to verify the validity of a regular expression used in specifying the patterns of keywords of a language. A well-accepted solution is to use finite automata for verifica...
In the standard, the right-hand sides of productions are based on regular expressions, although only regular expressions that denote words unambiguously, in the sense of the ISO standard, are allowed. In general, a word that is denoted by a regular expression is witnessed by a sequence of ...
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik Volume 63, Issue 7, page 333, 1983Additional Information How to Cite Weinelt, W. (1983), Coddington, E. A. / de Snoo, H. S. V., Regular Boundary Value Problems Associated with Pairs...
The expression ofχ is χ={−(1+ζ)ℓ★(2ζ)−1 Heaviside(θ−ζ)−c∼ρ−1Heaviside(ζ−θ):=χ1 if (i) or (ii) holdsχ1−ℓ★ρ−1(−ρℓ★/2)τ1[1/(ρ+2)+Inξ0] if f obeys (iii). Note that the only case ...
A Technique for Conversion of Regular Expression to Finite Automata and Vice-versaThe theory of computation is the branch of computer science and mathematics... Ashwani,S Sangwan,S Kumari 被引量: 0发表: 0年 Translation of binary regular expressions into nondeterministic ε -free automata with ja...