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John Thompson

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67 reputation
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3 Questions

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2
 Show that an open subset of a smooth manifold is again smooth.
2
 Proving that the general linear group is a differentiable manifold
0
 Solving absolute value inequalities.

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+40 subgroup of $\mathbb{Q}$ with finite index
+10 Show that an open subset of a smooth manifold is again smooth.
+10 Proving that the general linear group is a differentiable manifold

1 Answer

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 subgroup of $\mathbb{Q}$ with finite index

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group-theory
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differential-geometry × 2

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Mathematics Stack Exchange Mathematics 67 rep 5

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