Tagged Questions
2
votes
4answers
440 views
Difference between fields $\mathbb{Q}[\sqrt{2}+\sqrt{3}]$ and $\mathbb{Q}[\sqrt{2},\sqrt{3}]$? [duplicate]
Possible Duplicate:
Is $\mathbf{Q}(\sqrt{2}, \sqrt{3}) = \mathbf{Q}(\sqrt{2}+\sqrt{3})$?
How would one describe elements from $\mathbb{Q}[\sqrt{2}+\sqrt{3}]$ and ...
3
votes
1answer
100 views
Set of solutions to quadratics over $\mathbb{Q}$
Does the set of solutions to quadratics over $\mathbb{Q}$ form a subgroup of the additive group $\mathbb{R}$?
