MathDB
Trivial

Source: IMC 1999 day 2 problem 1

November 19, 2005
superior algebrasuperior algebra solved

Problem Statement

Let RR be a ring where aR:a2=0\forall a\in R: a^2=0. Prove that abc+abc=0abc+abc=0 for all a,b,cRa,b,c\in R.