Question

what is lemma?..............​

Answer 1

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In mathematics, informal logic and argument mapping, a lemma is a generally minor, proven proposition which is used as a stepping stone to a larger result. For that reason, it is also known as a "helping theorem" or an "auxiliary theorem".

Answer 2

Lemma:-

A lemma is a generally minor, proven proposition which is used as a stepping stone to a larger result.