3. For each of the following statements, indicate whether they are true or false. If a statement is true, prove it. If a statement is false, give a counterexample. (a) For two permutations a, ẞ in the symmetric group Sym(n), if a is odd, then the conjugation B-1 aẞ is also odd. (b) For three square matrices A, B, and C of the same size, if AC (c) Let A be a 3 × 3 matrix over R such that AT = -A (where AT is the transpose). Then det(A) = 0. = BC, then A = B.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.1: Definition Of A Group
Problem 7TFE: Label each of the following statements as either true or false. The Cayley table for a group will...
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Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.
and and Very very grateful!

3. For each of the following statements, indicate whether they are true or false. If a statement
is true, prove it. If a statement is false, give a counterexample.
(a) For two permutations a, ẞ in the symmetric group Sym(n), if a is odd, then the
conjugation B-1 aẞ is also odd.
(b) For three square matrices A, B, and C of the same size, if AC
(c) Let A be a 3 × 3 matrix over R such that AT = -A (where AT is the transpose).
Then det(A) = 0.
=
BC, then A
= B.
Transcribed Image Text:3. For each of the following statements, indicate whether they are true or false. If a statement is true, prove it. If a statement is false, give a counterexample. (a) For two permutations a, ẞ in the symmetric group Sym(n), if a is odd, then the conjugation B-1 aẞ is also odd. (b) For three square matrices A, B, and C of the same size, if AC (c) Let A be a 3 × 3 matrix over R such that AT = -A (where AT is the transpose). Then det(A) = 0. = BC, then A = B.
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