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@ -93,7 +93,7 @@ Anschaulich ist also ein $n$-dimensionale Mannigfaltigkeit lokal dem $\mdr^n$ ä
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Karten: \\
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$D_i := \{(x_1, \dots, x_{n+1}) \in S^n | x_i > 0\} \rightarrow \fB_1 (\underbrace{0, \dots, 0}_{\in \mdr^n})$\\
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$C_i := \{(x_1, \dots, x_{n+1}) \in S^n | x_i < 0\}$\\
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$C_i := \{(x_1, \dots, x_{n+1}) \in S^n | x_i < 0\} \rightarrow \fB_1 (0, \dots, 0)$\\
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$(x_1, \dots, x_{n+1}) \mapsto (x_1, \dots, \cancel{x_i}, \dots, x_{n+1})$\footnote{$x_i$ wird rausgenommen}\\
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$(x_1, \dots, x_{n}) \mapsto (x_1, \dots, x_{i-1}, \sqrt{1-\sum_{k=1}^n x_k^2}, x_i, \dots, x_n)$, oder $-\sqrt{1-\sum_{k=1}^n x_k^2}$ für $C_i$\\
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$S^n = \bigcup_{i=1}^{n+1} (C_i \cup D_i)$
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@ -157,7 +157,7 @@ für eine $C^\infty$-Funktion $f: \mdr^3 \rightarrow \mdr$.
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(d.~h. $s \in V$)
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\[(u,v) \mapsto (x(u,v), y(u,v), z(u,v))\]
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Für $p=F^{-1}(s) \in U$ sei
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\[ J_F(u,v) = \begin{pmatrix}
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\[ J_F(p) = \begin{pmatrix}
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\frac{\partial x}{\partial u} (p) & \frac{\partial x}{\partial v} (p)\\
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\frac{\partial y}{\partial u} (p) & \frac{\partial y}{\partial v} (p)\\
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\frac{\partial z}{\partial u} (p) & \frac{\partial z}{\partial v} (p)
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