The Indo-European languages are a language family native to the overwhelming majority of Europe, the Iranian plateau, and the northern Indian subcontinent. Some European languages of this family—English, French, Portuguese, Russian, Dutch, and Spanish—have expanded through colonialism in the modern period and are now spoken across several continents. The Indo-European family is divided into several branches or sub-families, of which there are eight groups with languages still alive today: Albanian, Armenian, Balto-Slavic, Celtic, Germanic, Hellenic, Indo-Iranian, and Italic/Romance; and another nine subdivisions that are now extinct.
Verner's law describes a historical sound change in the Proto-Germanic language whereby consonants that would usually have been the voiceless fricatives *f, *þ, *s, *h, *hʷ, following an unstressed syllable, became the voiced fricatives *β, *ð, *z, *ɣ, *ɣʷ. The law was formulated by Karl Verner, and first published in 1877.
The Balto-Slavic languages form a branch of the Indo-European family of languages, traditionally comprising the Baltic and Slavic languages. Baltic and Slavic languages share several linguistic traits not found in any other Indo-European branch, which points to a period of common development and origin.
The ruki sound law, also known as the ruki rule or iurk rule, is a historical sound change that took place in the satem branches of the Indo-European language family, namely in Balto-Slavic, Armenian, and Indo-Iranian. According to this sound law, an original *s changed to *š after the consonants *r, *k, *g, *gʰ and the semi-vowels *w (*u̯) and *y (*i̯), as well as the syllabic allophones *r̥, *i, and *u:
The glottalic theory is that Proto-Indo-European had ejective or otherwise non-pulmonic stops, *pʼ *tʼ *kʼ, instead of the plain voiced ones, *b *d *ɡ as hypothesized by the usual Proto-Indo-European phonological reconstructions.
Indo-Uralic is a controversial language family consisting of Indo-European and Uralic.
In historical linguistics, Italo-Celtic is a hypothetical grouping of the Italic and Celtic branches of the Indo-European language family on the basis of features shared by these two branches and no others. There is controversy about the causes of these similarities. They are usually considered to be innovations, likely to have developed after the breakup of the Proto-Indo-European language. It is also possible that some of these are not innovations, but shared conservative features, i.e. original Indo-European language features which have disappeared in all other language groups. What is commonly accepted is that the shared features may usefully be thought of as Italo-Celtic forms, as they are certainly shared by the two families and are almost certainly not coincidental.
Johan Frederik "Frits" Staal was the department founder and Emeritus Professor of Philosophy and South/Southeast Asian Studies at the University of California, Berkeley. Staal specialized in the study of Vedic ritual and mantras, and the scientific exploration of ritual and mysticism. He was also a scholar of Greek and Indian logic and philosophy and Sanskrit grammar.
Robert Stephen Paul Beekes was a Dutch linguist who was emeritus professor of Comparative Indo-European Linguistics at Leiden University and an author of many monographs on the Proto-Indo-European language.
The Leiden school is a school of thought in linguistics that models languages as memes or benign neurological parasites, and tries to use rigorous mathematical tools borrowed by analogy from biological evolution to model the origin and spread of language in general and specific languages in particular.
Symbiosism is a philosophy about the mind and man's place in nature. It is a Darwinian theory, which considers language an organism residing in the human brain and claims that language is a memetic life form. Symbiosism is defined by the Leiden School.
Leiden Studies in Indo-European is an academic book series on Indo-European studies.
The series was founded in 1991 and is published by Rodopi.
In the tree model of historical linguistics, a proto-language is a postulated ancestral language from which a number of attested languages are believed to have descended by evolution, forming a language family. Proto-languages are usually unattested, or partially attested at best. They are reconstructed by way of the comparative method.
Studies in Slavic and General Linguistics (SSGL) is an academic book series that was founded in 1980 by A.A. Barentsen, B.M. Groen and R. Sprenger and is published by Rodopi.
Hirt's law or Hirt–Illich-Svitych's law, named after Hermann Hirt, who originally postulated it in 1895, is a Balto-Slavic sound law that triggered the retraction of the accent under certain conditions.
Christian Schweigaard Stang was a Norwegian linguist, Slavicist and Balticist, professor in Balto-Slavic languages at the University of Oslo from 1938 until shortly before his death. He specialized in the study of Lithuanian and was highly regarded in Lithuania.
Rick Derksen is a Dutch linguist and Indo-Europeanist at the University of Leiden who specializes in Balto-Slavic historical linguistics with an emphasis on accentology and etymology.
The Proto-Slavic language, the hypothetical ancestor of the modern-day Slavic languages, developed from the ancestral Proto-Balto-Slavic language, which is the parent language of the Balto-Slavic languages. The first 2,000 years or so consist of the pre-Slavic era, a long period during which none of the later dialectal differences between Slavic languages had yet happened. The last stage in which the language remained without internal differences that later characterize different Slavic languages can be dated around AD 500 and is sometimes termed Proto-Slavic proper or Early Common Slavic. Following this is the Common Slavic period, during which the first dialectal differences appeared but the entire Slavic-speaking area continued to function as a single language, with sound changes tending to spread throughout the entire area. By around 1000, the area had broken up into separate East Slavic, West Slavic and South Slavic languages, and in the following centuries it broke up further into the various modern Slavic languages of which the following are extant: Belarusian, Russian, Rusyn and Ukrainian in the East; Czech, Slovak, Polish, Kashubian and the Sorbian languages in the West, and Bulgarian, Macedonian, Serbo-Croatian and Slovenian in the South.
Orsat Ligorio is a Croatian and Serbian linguist who is a professor of Ancient Greek and Sanskrit at the University of Belgrade and an author of a number of publications in Indo-European etymology.
Alexander "Sasha" Lubotsky is a Russian-Dutch linguist and Indologist who specializes in the study of Indo-Iranian languages. He is the editor-in-chief of the Leiden Indo-European Etymological Dictionary project.
