Titlebook: Language Equations; Ernst L. Leiss Book 1999 Springer Science+Business Media New York 1999 Alphabet.Star.derivative.equation.form.framewor

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Regular Implicit Equations over a One-Letter Alphabet with Union, Concatenation, and Star,. Specifically, the operations involved in the expressions are union, unrestricted concatenation, and star, and the constants are regular languages over a one-letter alphabet. The main result is a constructive approach to finding a regular solution of a given system of implicit equations over {.}. Q

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Implicit Relations with Union and Left-Concatenation, This continues our study of language relations begun in the previous chapter. Implicit relations express a constant language in terms of an expression involving variables and require that the variables be determined so that the relation is satisfied. Primarily we consider systems of relations of th

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Mixed Systems, of the explicit equations contained in the mixed system, together with a solution method for implicit systems, yields a general method for determin-ing whether such a system has a solution, and if so, how to find it. Consequently, provided there is at most one explicit equation for each variable, w

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978-1-4612-7436-0Springer Science+Business Media New York 1999

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