Rusty Shackleford on Nostr: The Alexander Horned Sphere: A Wild Counterexample in Topology Presented by ...
The Alexander Horned Sphere: A Wild Counterexample in Topology
Presented by MathInfinium
May 3, 2026
https://youtube.com/watch?v=FGAA9Jq0RXA> In this video, we explore one of the most fascinating objects in topology, the Alexander horned sphere. Although this object is homeomorphic to a standard sphere, its embedding in three-dimensional space is highly non-trivial.
This example highlights a deep idea in topology: the properties of a space depend not only on the object itself, but also on how it is embedded.
Published at
2026-05-16 07:44:06 UTCEvent JSON
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