Title: Relativization that you did
Description: This work address the puzzle why VP ellipsis where the subject plus an auxiliary/modal /negation (non bare-VP ellipsis) is not possible in relatives derived via operator movement, whereas VP ellipsis where only the subject remains (bare-VP ellipsis) is possible in both relatives derived via operator movement as well as head noun movement. I will argue that Polish and Russian ellipsis data points to the generalization that VP-ellipsis is essentially deletion of a topic VP.
In the first part of the thesis, I show that Polish and Russian relative clauses divide into two types: (i) derived by head noun movement (co/čto-relatives), and (ii) derived by operator movement and adjunction of the relative to the head noun (który/kotoryj-relatives). 
In the second part, I answer why bare-VP ellipsis is only possible in co/čto-relatives, and non bare-VP ellipsis is possible in both types of relatives. I will argue that de-stressing and subsequent ellipsis requires the establishment of Topic and Focus in overt syntax. The establishment of Topic/Focus interacts with relative clause formation giving rise to the asymmetry in the availability of both types of VP ellipsis in different kinds of relative clauses.
Subjects: Comparative and general Grammar, Ellipsis, Grammar, Comparative and general, Polish language, Relative clauses, Russian language, Slavic languages, Syntax