Peter Kosta, Jens Frasek

• "Unaccusativity (Ergativity) and Unergativity in Czech, Polish and some other Slavic languages at the morpho- syntactic interface" Ergativity, or Unaccusativity, as a potential universal verbal class with idiosyncratic morphosyntactic properties, shows up in many languages of different genetic and typological origin. In Slavic, there have been only few approaches up to now that tried to show which tests and diagnostic criteria can confirm or reject the universal character of these phenomena. The following article tries to resolve the problem by assuming a new syntactic and semantic analysis on ergativity in Slavic including new theories within the Minimalist framework (Chomsky 1995, 1998, 1999, 2000, 2001ab). Keywords: Unaccusativity, Ergativity, Unergativity; Conflation, Argument Structure; UTAH, Aspectual Mapping Hypothesis, Visibility Condition, Case Assignment, Theta-Theory, Burzio's Generalization, Morphosyntax, Distributed Morphology, Late Insertion, Representation Theory.