This book constitutes the refereed proceedings of the 11th Latin American Symposium on Theoretical Informatics, LATIN 2014, held in Montevideo, Uruguay, in March/April 2014. The 65 papers presented together with 5 abstracts were carefully reviewed and selected from 192 submissions. The papers address a variety of topics in theoretical computer science with a certain focus on complexity, computational geometry, graph drawing, automata, computability, algorithms on graphs, algorithms, random structures, complexity on graphs, analytic combinatorics, analytic and enumerative combinatorics, approximation algorithms, analysis of algorithms, computational algebra, applications to bioinformatics, budget problems and algorithms and data structures.

This volume contains the lecture notes from the courses o?ered at the Inter- tional Summer School on Language Engineering and Rigorous Software De- lopment, held in Piriap ' olis, Uruguay, from February 25 to March 1, 2008. The aim of the schoolwasthe dissemination of advancedscienti?c knowledge in the areas of programming languages and rigorous methods for software - velopment. The school was oriented to computer science graduate students and researchers,withaninterestinformaltechniquesforthedesignandconstruction of software systems as well as programming languages. The school was organized in the context of the LERnet (Language En- neering and Rigorous Software Development) project. LERnet is a project of the ALFA programme of the European Commission for co-operation between higher education institutions of the European Union and Latin America. The institutions that participate in the LERnet project are the following: - Chalmers Tekniska H.. ogskola, Sweden - Institut National de la Recherche en Informatique et Automatique (INRIA), France - Universidad de Castilla-La Mancha, Spain - Universidad Catol ' ica de Santiago del Estero, Argentina - Universidad EAFIT, Colombia - Universidade Federal de Minas Gerais, Brazil - Universidade do Minho, Portugal - Universidad Nacional de San Luis, Argentina - Universidad Polit' ecnica de Valencia, Spain - Universidad de la Republica ' , Uruguay - Universiteit Utrecht, The Netherlands The project oversees the mobility of PhD students from Latin America to the European Union and vice versa for a period of up to 18 months, to pursue

This book constitutes the proceedings of the 19th Brazilian Symposium on Progamming Languages, SBLP 2015, held in Belo Horizonte, Brazil, in September 2015. The 10 papers presented in this volume were carefully reviewed and selected from 26 submissions. They deal with fundamental principles and innovations in the design and implementation of programming languages and systems.