Groups - Abstract Algebra

Card 0 of 4

Question

Which of the following is an identity element of the binary operation ?

Answer

Defining the binary operation will help in understanding the identity element. Say is a set and the binary operator is defined as for all given pairs in .

Then there exists an identity element in such that given,

Therefore, looking at the possible answer selections the correct answer is,

Compare your answer with the correct one above

Question

Which of the following illustrates the inverse element?

Answer

For every element in a set, there exists another element that when they are multiplied together results in the identity element.

In mathematical terms this is stated as follows.

For every such that where and is an identity element.

Compare your answer with the correct one above

Question

identify the following definition.

Given is a normal subgroup of , it is denoted that when the group of left cosets of in is called __________.

Answer

By definition of a factor group it is stated,

Given is a normal subgroup of , it is denoted that when the group of left cosets of in is called the factor group of which is determined by .

Compare your answer with the correct one above

Question

Determine whether the statement is true of false:

Answer

This statement is true based on the following theorem.

For all , in .

If is a normal subgroup of then the cosets of forms a group under the multiplication given by,

Compare your answer with the correct one above

Tap the card to reveal the answer