Developments in Language Theory : 6th International Conference DLT 2002 Kyoto Japan September 18 21 2002 Revised Papers This book constitutes the refereed proceedings of the 6th International Conference on Developments in Language Theory DLT 2002 held in Kyoto Japan in September 2002. The 28 revised full papers presented together with 8 invited papers were carefully reviewed and selected from 63 submissions. Among the topics addressed are grammars and acceptors for strings graphs arrays etc; efficient algorithms for languages; combinatorial and algebraic properties of languages; decision problems; relations to complexity theory logic picture description and analysis DNA computing cryptography concurrency quantum computing and algebraic systems