Question:An element [a] of Zn is said to be idempotent if [a]^2 = [a].
Prove that...
Question
An element [a] of Zn is said to be idempotent if [a]^2 = [a].
Prove that...
An element [a] of Zn is said to be idempotent if [a]^2 = [a].
Prove that if p is a prime number, then [0] and [1] are the only
idempotents in Zp. (abstract algebra)