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Results tagged with examples
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user 23571
For questions requesting examples of a certain structure or phenomenon
34
votes
Accepted
Are there pairs of highly connected finite CW-complexes with the same homotopy groups?
Here is a method for constructing examples. … Perhaps there are simpler examples. It might be interesting to find examples where just homology suffices to distinguish the two spaces. …
- 20k
31
votes
Accepted
Fundamental group of the line with the double origin.
The earlier answers showing that the fundamental group of this space is infinite cyclic by determining its universal cover or by constructing a fiber bundle over it with contractible fibers are very n …
- 20k
15
votes
Satellite knot example
Examples for this are easy to find, such as the Whitehead double of the figure eight knot. …
- 20k