LP-rule

An LD-rule X <math>\prec</math> Y states that category X has to precede category Y. Formally, it is a well-formedness condition for local trees: It licenses all local trees containing a daughter labelled X and a daughter labelled Y_1, so that X precedes Y.

See also

• Generalized Phrase Structure Grammar
• ID/LP rules
• ID-rule

Comment

LD-rules were first introduced in Generalized Phrase Structure Grammar.

Other Languages

• German LP-Regel