exotic 7-sphere

URI: https://gptkb.org/entity/exotic_7-sphere
GPTKB entity
Statements (15)
Predicate Object
gptkbp:instanceOf gptkb:Riemannian_manifold
gptkb:exotic_sphere
gptkbp:category differential topology
gptkbp:dimensions 7
gptkbp:discoveredBy gptkb:John_Milnor
gptkbp:discoveredIn 1956
gptkbp:isomorphicTo gptkb:standard_7-sphere
gptkbp:not_diffeomorphic_to gptkb:standard_7-sphere
gptkbp:numberOfDistinctSmoothStructures 28
gptkbp:relatedTo gptkb:h-cobordism_theorem
gptkb:butter
smooth structure
gptkbp:bfsParent gptkb:Milnor's_construction_of_exotic_7-spheres
gptkbp:bfsLayer 5
https://www.w3.org/2000/01/rdf-schema#label exotic 7-sphere