Nyhetsforum

Homework 3

 
Bild av Mats Boij
Homework 3
av Mats Boij - onsdag, 13 september 2017, 14:32
 

The third homework assignment is now available. 

Bild av Mats Boij
Svar: Homework 3
av Mats Boij - söndag, 17 september 2017, 21:37
 

Since I have got some questions regarding the third set of problems I'll make some clarifications.

1. By the category of finite modules over Z I mean the category of Z-modules of finite cardinality. Thus in the definition of projective, we only consider short exact sequences in this category. 

3. By principal module I mean a module that is generated by a single element. All such modules are isomorphic to A/J for some ideal J in a natural way.