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In morphology and lexicography, a lemma (pl.: lemmas or lemmata) is the canonical form, [1] dictionary form, or citation form of a set of word forms. [2] In English, for example, break , breaks , broke , broken and breaking are forms of the same lexeme , with break as the lemma by which they are indexed.
Burnside's lemma also known as the Cauchy–Frobenius lemma; Frattini's lemma (finite groups) Goursat's lemma; Mautner's lemma (representation theory) Ping-pong lemma (geometric group theory) Schreier's subgroup lemma; Schur's lemma (representation theory) Zassenhaus lemma
Lemma (morphology), the canonical, dictionary or citation form of a word; Lemma (psycholinguistics), a mental abstraction of a word about to be uttered;
For example, in English, the verb 'to walk' may appear as 'walk', 'walked', 'walks' or 'walking'. The base form, 'walk', that one might look up in a dictionary, is called the lemma for the word. The association of the base form with a part of speech is often called a lexeme of the word. Lemmatization is closely related to stemming.
For example, in the English language, run, runs, ran and running are forms of the same lexeme, which can be represented as RUN. [note 1] One form, the lemma (or citation form), is chosen by convention as the canonical form of a lexeme. The lemma is the form used in dictionaries as an entry's headword. Other forms of a lexeme are often listed ...
Medical Subject Headings (MeSH) is a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences. It serves as a thesaurus of index terms that facilitates searching.
Missouri State Medical Association: English: 1904–present Molecular Medicine: Medicine: The Feinstein Institute for Medical Research: English: 1994–present Molecular Neurodegeneration: Neurology: BioMed Central: English: 2006–present Mount Sinai Journal of Medicine: Medicine: John Wiley & Sons: English: 1934–2012 Movement Disorders ...
In mathematics and other fields, [a] a lemma (pl.: lemmas or lemmata) is a generally minor, proven proposition which is used to prove a larger statement. For that reason, it is also known as a "helping theorem " or an "auxiliary theorem".