History of the Semantics of the Proto-Slavic Lexemes *Edinŭ and *Samŭ
According to one of the most well-founded hypotheses, in the Proto-Indo-European language *sem-, meant ‘unus,’ whereas *Hoi̯H- meant ‘solus.’ In this article arguments for and against this hypothesis are examined in detail. In Proto-Slavic the reverse distribution is observed: *samъ, indirectly originating from *sem-, meant ‘solus,’ whereas *edinъ, going back to *Hoi̯H-, meant ‘unus.’ This article is an at tempt to determine how *somHos (> *samъ) ‘idem’ in Proto-Slavic extended its meaning first to ‘ipse’ and then to ‘solus’ and to analyze exactly how it happened. Although for the Indo-European languages the reverse situation is more common (‘ipse’ acquires the meaning ‘idem’), a similar pattern for such a shift in meaning can be found in the history of Ancient Greek αὐτός.