Exotic R4
In mathematics, an exotic R 4 {\displaystyle \mathbb {R} ^{4}} is a differentiable manifold that is homeomorphic (i.e. shape preserving) but not diffeomorphic (i.e.
In mathematics, an exotic R 4 {\displaystyle \mathbb {R} ^{4}} is a differentiable manifold that is homeomorphic (i.e. shape preserving) but not diffeomorphic (i.e.
In mathematics, an exotic R 4 {\displaystyle \mathbb {R} ^{4}} is a differentiable manifold that is homeomorphic (i.e. shape preserving) but not diffeomorphic (i.e.
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