- #1
hnbc1
- 5
- 0
Homework Statement
1. Find an uncountable number of subsets of metric spaces [tex]\left(\mathbb{R}^{n},d_{p}\right)[/tex] and [tex]\left(\mathbb{C}^{n},d_{p}\right)[/tex] that are neither open nor closed.
2. If [tex]1\leq p<q [/tex], then the unit ball in [tex]\left(\mathbb{R}^{n},d_{p}\right)[/tex] is contained in the unit ball in [tex]\left(\mathbb{R}^{n},d_{q}\right)[/tex]
Homework Equations
The Attempt at a Solution
For (1), I think I should start with some point and construct balls centered at this point.
For (2), I think it boils down to prove: [tex]\left(\sum_{i}^{n}\left|x_{i}\right|^{p}\right)^{\frac{1}{p}}\geq\left(\sum_{i}^{n}\left|x_{i}\right|^{q}\right)^{\frac{1}{q}}[/tex]
Last edited: