I think I'm beginning to see your point. If you perform the second operation first then solve and use counterclockwise rotations they work. I wish he'd made that clearer.
Thanks for commenting.
But Devlin states that v and w are indeed clockwise rotations of 120° and 240° respectively since rotating an equilateral triangle counterclockwise 120° is the same as rotating it clockwise 240° and vice versa. By the way, how did you solve x ○ y = v assuming that the...
Possible error found in Keith Devlin's book "The Math Gene" Help?
Homework Statement
In the section "What is mathematics?" of Keith Devlin's book The Math Gene, he explains to the layman the purpose of abstractions. Devlin uses an example from group theory of symmetry to explain a point...