- #1
JojoF
- 4
- 1
Homework Statement
let n ≥ 2
Show that Dn = < a,b | a2, b2, (ab)n>
Homework Equations
The Attempt at a Solution
I see that a and b are involutions and therefore are two different reflections of Dn.
If we set set b = ar where r is a rotation of 2π/n
And Dn = <a,r | a2, rn, (ab)2 >
I am unsure how to write this as a clean proof... I would appreciate some ideas