# Comparing Group theory and Electromagnetism

1. Apr 1, 2015

### Futurestar33

1. The problem statement, all variables and given/known data
Good afternoon,

How can you mathematicaly talk about how how group theory compares to electromagnetism.

2. Relevant equations
e^iθ=Cosθ+iSinθ

3. The attempt at a solution
I know that the above formula is because of a sin wave and a cosine wave. Put them together and you get a certain pattern. That corresponds to group theory but I really dont know too much else about it.

Thank you

2. Apr 2, 2015

### Orodruin

Staff Emeritus
I am sorry, but your entire question seems quite badly defined. Group theory is an important tool when dealing with electromagnetism or other physical theories, but it is unclear how you think they would be "compared" - one is a mathematical construct and tool while the other is a physics model.

3. Apr 2, 2015

### Futurestar33

Well our teacher asked us the question, I can post some more details a little later.

Also you said that Group theory is an important tool when dealing with electromagnetism, why?

4. Apr 2, 2015

### Orodruin

Staff Emeritus
Group theory is an important tool in most of theoretical physics of today. For electromagnetism, it is a gauge theory based on the symmetry group U(1). This probably does not mean much to you at present, but will be fundamental if you go on to study more advanced physics.