MathDB

4

Part of 1993 Iran MO (3rd Round)

Problems(1)

Prove that there exists a subset S of positive integers

Source: Iran Third Round Problems 1993 – Poblem 4

7/29/2011
Prove that there exists a subset SS of positive integers such that we can represent each positive integer as difference of two elements of SS in exactly one way.
number theorynumber theory proposed