MathDB

Additive group

Source: Brazil Undergrad MO - Galois-Noether 2018 #25

November 26, 2019

topologyBrazilian Undergrad MOgroup theory

Problem Statement

Consider the

\mathbb {Z} / (10)

additive group automorphism group of integers module

10

, that is,

A = \left \{\phi: \mathbb {Z} / (10) \to \mathbb {Z} / (10) | \phi-automorphism \right \}