A lemma is a statement or proposition that is proven for the purpose of helping to prove a larger theorem or result. In mathematics and logic, lemmas are intermediate steps that aid in establishing the validity of other statements. They are often used to break down complex proofs into more manageable parts, making the overall argument clearer and easier to follow. In linguistics, "lemmas" refer to the canonical or base form of a word, which represents all its inflected forms.
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