Abstract algebra class equation

Click For Summary
SUMMARY

The discussion centers on the properties of group theory, specifically addressing the class equation in abstract algebra. It establishes that if every element of a group, G, has an order that is a power of a prime number p, then the order of G itself must also be a prime power. Participants emphasize the importance of understanding the definitions of "order of a group" and "order of an element," and suggest applying Cauchy's theorem to analyze groups whose order is not a power of p. Examples such as the groups (ℤ₄, *) and (ℤ₅, *) are referenced to illustrate these concepts.

PREREQUISITES
  • Understanding of group theory concepts, specifically "order of a group"
  • Familiarity with Cauchy's theorem in abstract algebra
  • Basic knowledge of cyclic groups and their properties
  • Experience with mathematical notation and symbols used in group theory
NEXT STEPS
  • Study the class equation in detail and its applications in group theory
  • Explore Cauchy's theorem and its implications for finite groups
  • Examine examples of cyclic groups and their orders
  • Investigate the relationship between group orders and prime factorization
USEFUL FOR

Students of abstract algebra, mathematicians focusing on group theory, and educators seeking to clarify concepts related to group orders and the class equation.

Mr Davis 97
Messages
1,461
Reaction score
44
1. The problem statement, all variables and given/known
I
f each element of a group, G, has order
which is a power of p, then the order of G is also a prime power.

Homework Equations

The Attempt at a Solution


I am not sure really where to get started. I know that the class equation will be used though
 
Physics news on Phys.org
Mr Davis 97 said:
1. The problem statement, all variables and given/known
I
f each element of a group, G, has order
which is a power of p, then the order of G is also a prime power.

Homework Equations

The Attempt at a Solution


I am not sure really where to get started. I know that the class equation will be used though
How does your textbook define the phrase "order of a group"?
 
Mark44 said:
How does your textbook define the phrase "order of a group"?
The order of G is the number of elements in G
 
And what is the order of an element of a group? It might be helpful to look at some examples, such as ##(\mathbb{Z_4}, *)## or ##(\mathbb{Z_5}, *)##.
 
The order of an element of a group is the order of the cyclic subgroup that it generates.
 
Mr Davis 97 said:
The order of an element of a group is the order of the cyclic subgroup that it generates.

Sure it is. I suggest you apply Cauchy's theorem to your group. Suppose the order of ##G## is NOT a power of ##p##?
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
936
Replies
5
Views
2K
Replies
3
Views
9K
  • · Replies 12 ·
Replies
12
Views
3K
Replies
2
Views
5K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
588