example of a semilocally simply connected space which is not locally simply connected
Let be the Hawaiian rings, and define to be the cone over Then, is connected, locally connected, and semilocally simply connected, but not locally simply connected.
Too see this, let be the point to which the circles converge in and represent as Then, every small enough neighborhood of fails to be simply connected. However, since is a cone, it is contractible, so all loops (in particular, loops in a neighborhood of ) can be contracted to a point within .
Title | example of a semilocally simply connected space which is not locally simply connected |
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Canonical name | ExampleOfASemilocallySimplyConnectedSpaceWhichIsNotLocallySimplyConnected |
Date of creation | 2013-03-22 13:25:15 |
Last modified on | 2013-03-22 13:25:15 |
Owner | antonio (1116) |
Last modified by | antonio (1116) |
Numerical id | 5 |
Author | antonio (1116) |
Entry type | Example |
Classification | msc 54D05 |
Classification | msc 57M10 |