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Proposition: Comparing Natural Numbers Using the Concept of Addition
Given two natural numbers \(x,y\), only one of the following cases can be true:
 Either \(x=y\),
 or there exists exactly one natural number \(u\neq 0\) with \(x=y+u\),
 or there exists exactly one natural number \(u\neq 0\) with \(x=y+u\),
Table of Contents
Proofs: 1 Corollaries: 1
Mentioned in:
Definitions: 1
Proofs: 2
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References
Bibliography
 Landau, Edmund: "Grundlagen der Analysis", Heldermann Verlag, 2008