Category:Definitions/Lemmata

This category contains definitions related to Lemmata.
Related results can be found in Category:Lemmata.

A lemma is a statement which is proven during the course of reaching the proof of a theorem.

Logically there is no qualitative difference between a lemma and a theorem.

They are both statements whose value is either true or false.

However, a lemma is seen more as a stepping-stone than a theorem in itself (and frequently takes a lot more work to prove than the theorem to which it leads).