Solution Found!
(a) Consider Example 4.1, and let a denote clockwise rotation through n /2 radians. Let
Chapter 4, Problem 4.5(choose chapter or problem)
(a) Consider Example 4.1, and let a denote clockwise rotation through n /2 radians. Let Hdenote the smallest subset of G such that a E H and H is closed with respect to o. DetermineH. (Suggestion: Denote a 0 a by a 2 , denote a 0 a 0 a by a 3 , and so on. H containsfour distinct elements.)(b) Same as (a) with n/2 replaced by n/6.(c) Same as (a) with n/2 replaced by n/k (k EN). How many distinct elements (rotations)does H contain? (Treat rotations as indistinct if they differ by an integral mUltiple of 2n.)
Questions & Answers
QUESTION:
(a) Consider Example 4.1, and let a denote clockwise rotation through n /2 radians. Let Hdenote the smallest subset of G such that a E H and H is closed with respect to o. DetermineH. (Suggestion: Denote a 0 a by a 2 , denote a 0 a 0 a by a 3 , and so on. H containsfour distinct elements.)(b) Same as (a) with n/2 replaced by n/6.(c) Same as (a) with n/2 replaced by n/k (k EN). How many distinct elements (rotations)does H contain? (Treat rotations as indistinct if they differ by an integral mUltiple of 2n.)
ANSWER:Step 1 of 3
(a)
The set is closed under since represents rotation which is same as initial position. The set is smallest set since is generated by .
The clockwise rotation is as follows: