The horned sphere and the game of Hex
This picture shows the Alexander horned sphere, which is a very nonstandard way to embed a sphere into 3-dimensional space. The horned sphere, which was first described by J.W. Alexander in 1924, has…
This picture shows the Alexander horned sphere, which is a very nonstandard way to embed a sphere into 3-dimensional space. The horned sphere, which was first described by J.W. Alexander in 1924, has…