Although there are some books dealing with algebraic theory of automata, their contents consist mainly of Krohn-Rhodes theory and related topics. The topics in the present book are rather different. For example, automorphism groups of automata and the partially ordered sets of automata are systematically discussed. Moreover, some operations on languages and special classes of regular languages associated with deterministic and nondeterministic directable automata are dealt with. The book is self-contained and hence does not require any knowledge of automata and formal languages.
Although there are some books dealing with algebraic theory of automata, their contents consist mainly of Krohn-Rhodes theory and related topics. The ...
A word is said to be primitive if it cannot be represented as any power of another word. It is a well-known conjecture that the set of all primitive words Q over a non-trivial alphabet is not context-free: this conjecture is still open. In this book, the authors deal with properties of primitive words over a non-primitive alphabet, the language consisting of all primitive words and related languages. Moreover, some decidable and undecidable problems with respect to the above languages are discussed as well. As another try, a search for a non-phrase structure grammar which generates Q is...
A word is said to be primitive if it cannot be represented as any power of another word. It is a well-known conjecture that the set of all primitive w...
This volume consists of papers selected from the presentations at the workshop and includes mainly recent developments in the fields of formal languages, automata theory and algebraic systems related to the theoretical computer science and informatics. It covers the areas such as automata and grammars, languages and codes, combinatorics on words, cryptosystems, logics and trees, Grobner bases, minimal clones, zero-divisor graphs, fine convergence of functions, and others.
This volume consists of papers selected from the presentations at the workshop and includes mainly recent developments in the fields of formal languag...
Japan has developed what is arguably the most sophisticated and the most democratic broadcasting system in the world. The Great Kanto Earthquake of 1st September 1923, with its devastation and confusion drove home in its appalling way the importance of being able to broadcast immediate information to the public. The same year, the Ministry of Communications promptly established an administrative system to regulate broadcasting. In less than a decade over one million people were registered listeners. Under the post war Constitution of 1946 freedom of "speech and all other forms of expression"...
Japan has developed what is arguably the most sophisticated and the most democratic broadcasting system in the world. The Great Kanto Earthquake of 1s...
