tailieunhanh - Constituent Structure - Part 24

Constituent Structure - Part 24 | 6o PRELIMINARIES Within the Government and Binding GB and minimalist approaches to syntactic theory NPs are licensed by structural Case which is assigned under a local version of c-command government see section by some particular node. This is one of the primary motivations for Aoun and Sportiche to introduce m-command. Nominative case is assigned by Infl in the configuration in 34a genitive case by a noun in the configuration in 34b . 34 a IP b NOM NP NP N PP If Case licensing does indeed occur under a c-command-like structural relation then clearly m-command is most appropriate. In the trees in 34 the case assigning node m-commands but does not c-command the NP it assigns case to. Barker and Pullum A unified approach to command relations Barker and Pullum 1990 12 13 14 offer an important contribution to our understanding of command relations and their underlying similarities and differences. They observe that many of the definitions like those given above of command are vague and imprecise such as what precisely is meant by first in first branching node . They provide a unified account of all command relationships and precise typology of the various kinds of command relationships. Barker and Pullum define all command relationships in terms of various kinds of upper bounds in terms of various relationships or properties. 14 12 For a detailed discussion of the mathematical properties of Barker and Pullum s proposal see Kracht 1993 . 13 In addition Barker and Pullum also observe a number of formal properties of command relations including the interrelationships between various kinds of command. See the original work for details. 14 Note that Barker and Pullum s deWnitions do not include the neither nor condition discussed in section . They claim to see no empirical reason for it. They do not discuss the i-within-i facts. It is a relatively minor change to fix their definitions so that it includes this condition. C-COMMAND AND GOVERNMENT 61 35 The set