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I'm wondering whether an $n$-dimensional manifold diffeomorphic to $R^n$$\mathbb{R}^n$ if its tangent bundle is diffeomorphic to $R^{2n}$$\mathbb{R}^{2n}$. Many thanks!
I'm wondering whether an $n$-dimensional manifold diffeomorphic to $R^n$ if its tangent bundle is diffeomorphic to $R^{2n}$. Many thanks!
I'm wondering whether an $n$-dimensional manifold diffeomorphic to $\mathbb{R}^n$ if its tangent bundle is diffeomorphic to $\mathbb{R}^{2n}$. Many thanks!