Hello Big Minds,(adsbygoogle = window.adsbygoogle || []).push({});

In the following analysis...It is said that D_2 contains three subgroups Z_2...why did he choose a mathematical constuction contains only two of the the three subgroups? shouldn't he use the three in his construction? what will happen if he used the three?

[from the book of P.Ramond, Group Theory, p8.]

best regards

Abolaban

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Question on group theory: simplest math construction

**Physics Forums | Science Articles, Homework Help, Discussion**