... Vjv is a finite set of nonterminals symbols, VT is a finite set of terminal symbols, S E V/v is the start symbol, I is a finite set of initial trees, A is a finite set of auxiliary trees use sa(7, ... given grammar if it can be derived using the rewriting rules of the grammar A d e r i v a t i o n tree of the grammar, on the other hand, is a tree that encodes the sequence of rewritings used in ... the set of trees derived starting from an initial tree such that no node in the resulting tree has an OA constraint The (string) language, L(G), generated by a TAG, G, is the set of strings that...