Activity for kreijstal
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #281007 |
If you page through the book, you can see that most of the definitions (and what the symbols mean) are defined there. I don't know which university course teaches this, but enrolling in a logic course would probably be satisfactory. (more) |
— | almost 3 years ago |
| Comment | Post #281866 |
Thank you for the lecture notes. (more) |
— | almost 3 years ago |
| Edit | Post #281864 | Initial revision | — | almost 3 years ago |
| Question | — |
How to show if a set is simply connected? How do I show that the following set is not simply connected? $M= \mathbb{R}^3\setminus\\{(x,y,z)\in \mathbb{R}^3|y=z=1\\} $ I am aware that if a set has a hole, then it isn't simply connected. But how can I show this? In the example I gave, I know that the set isn't simply connected because th... (more) |
— | almost 3 years ago |