Centre for Lusophone and European Literatures and Cultures Portugal, being home for more than 500 researchers, and the research unit with more young researchers in projects and positions of responsibility. Due to its established protocols, CLEPUL is part of an institutional network of cooperation for research in several areas of literary science and history of culture, including Portuguese institutions in Lisbon, Porto, Algarve and the Atlantic Islands, namely Madeira, and international institutions, such as in Australia and Canada, while keeping privileged relations with Lusophone countries, namely Brazil, Angola, Mozambique, Cape Verde, São Tomé and Príncipe and Guinea-Bissau. CLEPUL currently publishes six periodicals, to disseminate its scientific research results:
Proto-Indo-European language Proto-Indo-European language Proto-Indo-European (PIE) is the linguistic reconstruction of the common ancestor of the Indo-European languages, the most widely spoken language family in the world. Far more work has gone into reconstructing PIE than any other proto-language, and it is by far the best understood of all proto-languages of its age. The vast majority of linguistic work during the 19th century was devoted to the reconstruction of PIE or its daughter proto-languages (such as Proto-Germanic), and most of the modern techniques of linguistic reconstruction (such as the comparative method) were developed as a result. These methods supply all current knowledge