Proposition: 7.16: Natural Number Multiplication is Commutative
(Proposition 16 from Book 7 of Euclid's “Elements”)
If two numbers multiplying one another make some (numbers) then the (numbers) generated from them will be equal to one another.
Modern Formulation
see multiplication of natural numbers is commutative.
Table of Contents
Proofs: 1
Mentioned in:
Proofs: 1 2 3 4 5
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References
Adapted from (subject to copyright, with kind permission)
 Fitzpatrick, Richard: Euclid's "Elements of Geometry"
Adapted from CC BYSA 3.0 Sources:
 Prime.mover and others: "Pr∞fWiki", https://proofwiki.org/wiki/Main_Page, 2016