Activity for kreijstal
Type | On... | Excerpt | Status | Date |
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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 |