المرجع الالكتروني للمعلوماتية
المرجع الألكتروني للمعلوماتية

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delta (adj./n.)  
  
916   03:24 مساءً   date: 2023-08-07
Author : David Crystal
Book or Source : A dictionary of linguistics and phonetics
Page and Part : 134-4


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delta (adj./n.)

A symbol ∆ used in some MODELS of TRANSFORMATIONAL GRAMMAR, which acts as a DUMMY element in the generation of DEEP STRUCTURES. The purpose of the delta symbols is to mark the places in an initial PHRASE-MARKER (a PRE-LEXICAL structure) where LEXICAL items are later to be inserted: lexical insertion RULES then replace each ‘empty’ delta by a COMPLEX SYMBOL containing the SYNTACTIC FEATURES which will be used to define the deep structures of the grammar.