the topologist’s sine curve has the fixed point property
The typical example of a connected space that is not path connected (the topologist’s sine curve) has the fixed point property.
Let and , and .
If is a continuous map, then since and are both path connected, the image of each one of them must be entirely contained in another of them.
If , then has a fixed point because the interval has the fixed point property.If , then , and in particularand again has a fixed point.
So the only case that remains is that . And since is compact, its projection to the first coordinate is also compact so that it must be an interval with . Thus is contained in. But is homeomorphic to a closed interval, so that it has the fixed point property, andthe restriction of to is a continuous map , so that it has a fixed point.
This proof is due to Koro.