Curvature properties of exotic spheres
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A homotopy sphere of dimension $n$ is an oriented closed smooth | A homotopy sphere of dimension $n$ is an oriented closed smooth | ||
manifold which is homotopy equivalent to the standard sphere $S^n$. A homotopy sphere is called an exotoc sphere if it not diffeoemeorphic to a standard sphere. | manifold which is homotopy equivalent to the standard sphere $S^n$. A homotopy sphere is called an exotoc sphere if it not diffeoemeorphic to a standard sphere. | ||
− | General information about homotopy spheres (and exotoc spheres) is given on | + | General information about homotopy spheres (and exotoc spheres) is given on [[Exotic spheres]|Exotic spheres]. |
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== Introduction ==
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A homotopy sphere of dimension is an oriented closed smooth manifold which is homotopy equivalent to the standard sphere . A homotopy sphere is called an exotoc sphere if it not diffeoemeorphic to a standard sphere. General information about homotopy spheres (and exotoc spheres) is given on [[Exotic spheres]|Exotic spheres].