Chapter 4. Tectogrammatical lemma (t-lemma)

The tectogrammatical lemma of a node (further t-lemma) is one of the attributes of the node in a tectogrammatical tree (the t_lemma attribute). The value of the t_lemma attribute is either the node's lexical value (i.e. its basic form, represented as a sequence of graphemes), or an "artificial" value (the so called t-lemma substitute, see Section 4, "T-lemma substitutes").

Essentially, it is possible to distinguish two kinds of nodes according to their t-lemmas:

(Exceptions to this rough division are described below.)