Infinite dihedral group
= Infinite dihedral group
{wiki}
The infinite dihedral group is $\langle r,t\mid t^2=1,\ trt^{-1}=r^{-1}\rangle$.
= Infinite dihedral group
{wiki}
The infinite dihedral group is $\langle r,t\mid t^2=1,\ trt^{-1}=r^{-1}\rangle$.