A number is said to

multiply a(nother) numberwhen the (number being) multiplied is added (to itself) as many times as there are units in the former (number), and (thereby) some (other number) is produced.

See integer multiplication of two positive integers.

- Euclid deals in Book 7 with positive integers only.

| | | | | created: 2017-02-07 21:16:49 | modified: 2019-04-18 20:56:03 | by: *bookofproofs* | references: [6419]

[6419] **Fitzpatrick, Richard**: “Euclid’s Elements of Geometry”, http://farside.ph.utexas.edu/Books/Euclid/Euclid.html, 2007

(none)