Mathematics Exam  >  Mathematics Videos  >  Mathematics for Competitive Exams  >  Concept of Subgroup

Concept of Subgroup Video Lecture | Mathematics for Competitive Exams

98 videos|27 docs|30 tests

FAQs on Concept of Subgroup Video Lecture - Mathematics for Competitive Exams

1. What is a subgroup?
Ans. A subgroup is a subset of a group that itself forms a group under the same operation as the original group. It contains the identity element of the group and is closed under the group operation.
2. How is a subgroup related to a group?
Ans. A subgroup is a subset of a group that retains the same group structure as the original group. It means that the subgroup follows the same group axioms as the group it is a part of, such as closure, associativity, identity element, and inverse element.
3. Can a subgroup have more elements than the original group?
Ans. No, a subgroup cannot have more elements than the original group. By definition, a subgroup is a subset of a group, which means it can only contain elements that are already present in the original group. However, a subgroup can have fewer elements or even the same number of elements as the original group.
4. How can we determine if a subset is a subgroup?
Ans. To determine if a subset is a subgroup, we need to check if it satisfies the subgroup criteria. The criteria are: (1) it contains the identity element of the group, (2) it is closed under the group operation, and (3) it contains the inverse element of each of its elements. If a subset meets these criteria, it is a subgroup.
5. Can a subgroup be empty?
Ans. No, a subgroup cannot be empty. By definition, a subgroup must contain the identity element of the group. Since the identity element is always present in a group, any subgroup must have at least one element, which is the identity element.
98 videos|27 docs|30 tests
Explore Courses for Mathematics exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Previous Year Questions with Solutions

,

Semester Notes

,

past year papers

,

Concept of Subgroup Video Lecture | Mathematics for Competitive Exams

,

Summary

,

Sample Paper

,

video lectures

,

study material

,

Extra Questions

,

Important questions

,

Viva Questions

,

ppt

,

Objective type Questions

,

pdf

,

shortcuts and tricks

,

Concept of Subgroup Video Lecture | Mathematics for Competitive Exams

,

practice quizzes

,

mock tests for examination

,

Exam

,

MCQs

,

Free

,

Concept of Subgroup Video Lecture | Mathematics for Competitive Exams

;