Exotic R4
Smooth 4-manifold homeomorphic yet not diffeomorphic to Euclidean space
From Wikipedia, licensed CC BY-SA 4.0.
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★ 5.0 average from 1 person · 1 entry
Smooth 4-manifold homeomorphic yet not diffeomorphic to Euclidean space
From Wikipedia, licensed CC BY-SA 4.0.
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★ 5.0 average from 1 person · 1 entry