MathDB
n irational numbers

Source: 2019 Danube

October 29, 2019
number theory

Problem Statement

Let be a natural number n, n, and n n real numbers a1,a2,,an. a_1,a_2,\ldots ,a_n. Prove that there exists a real number a a such that a+a1,a+a2,,a+an a+a_1,a+a_2,\ldots ,a+a_n are all irrational.