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Lemma

usgb/ˈlemə/Volume
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Math Concept

A lemma is a stepping stone in proving a larger theory, not the final result.

Illustration for Math Concept
The Pythagorean theorem was proved using several lemmas.
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Pre-Theorem

Often less important than theorems, but they clarify or lead to mathematical proofs.

Illustration for Pre-Theorem
Before proving the main theorem, she formulated a lemma.
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AxiomHypothesisPostulatePremisePresuppositionPrinciplePropositionTheorem
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