Whitehead problem: Is every abelian group A with $Ext^1(A, \mathbb{Z}) = 0$ a free abelian group?
|
1 | [made Community Wiki] | ||
|
|
||||
|
|
1 | [made Community Wiki] | ||
|
Whitehead problem: Is every abelian group A with $Ext^1(A, \mathbb{Z}) = 0$ a free abelian group? |
||||
