Akbulut cork
In topology, an Akbulut cork is a structure that is frequently used to show that in 4 dimensions, the smooth h-cobordism theorem fails. It is named after Turkish mathematician Selman Akbulut.
In topology, an Akbulut cork is a structure that is frequently used to show that in 4 dimensions, the smooth h-cobordism theorem fails. It is named after Turkish mathematician Selman Akbulut.
In topology, an Akbulut cork is a structure that is frequently used to show that in 4 dimensions, the smooth h-cobordism theorem fails. It is named after Turkish mathematician Selman Akbulut.
Source: Wikipedia "Akbulut cork" · CC BY-SA 4.0
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