What topological property does $\Bbb R^n$ have which accounts for only the trivial sets ($\emptyset, \Bbb R^n$) being clopen? Is there a more general type of space where this is true? thanks
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.
Here's how it works:
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top