(After discussing this in class, it all makes much more sense to me. So I went back and corrected some GYHD that I did wrong before. 547 more words

## Tags » Codomain

#### Groups Lecture 3

*in which we meet group homomorphisms.*

As a small add-on from last time, we started by proving that the subgroups of the integers are exactly the sets of multiples . 511 more words