- #1
NasuSama
- 326
- 3
Homework Statement
Determine [itex]Aut(G)/Inn(G)[/itex], given [itex]G = D4[/itex].
2. The attempt at a solution
Let [itex]D_4 = \{e, x, y, y^2, y^3, xy, xy^2, xy^3\}[/itex]
Found that [itex]Inn(G) = \{\phi_e, \phi_x, \phi_y, \phi_{xy}\}[/itex] and [itex]\mathrm{Aut}(G)[/itex] consists of 8 bijective functions. But I can't find [itex]Aut(G)/Inn(G)[/itex].