Edited in collaboration with FoLLI, the Association of Logic, Language and Information, this book constitutes the refereed proceedings of the 24th International Conference on Formal Grammar, FG 2019, held in Riga, Latvia, in August 2019, in conjunction with the 31st European Summer School in Logic, Language and Information, ESSLI 2019. The 7 full papers presented were carefully reviewed and selected from 11 submissions. They present new and original research on formal grammar, mathematical linguistics, and the application of formal and mathematical methods to the study of natural language and focus on topics such as formal and computational phonology, morphology, syntax, semantics, and pragmatics; model-theoretic and proof-theoretic methods in linguistics; logical aspects of linguistic structure; constraint-based and resource-sensitive approaches to grammar; learnability of formal grammar; integration of stochastic and symbolic models of grammar; foundational, methodological, and architectural issues in grammar and linguistics; and mathematical foundations of statistical approaches to linguistic analysis.

This book constitutes the thoroughly refereed post proceedings of two international workshops on special aspects of digital libraries, namely the First International Workshop on Natural Language Processing for Digital Libraries, NLP4DL 2009, held in Viareggio, Italy in June 2009 and the CACAO Project Workshop Advanced Technologies for Digital Libraries, AT4DL 2009, held in Trento, Italy in September 2009. A new open call was sent after the workshops. The revised full papers presented at the workshops and the newly submitted ones went through two rounds of reviewing and revision. The 10 papers selected address various aspects of NLP in digital libraries, search, classification, and digital document processing.