| @@ -58,6 +58,42 @@ | |||||
| \text{Graph}(y) = \{ (t, y(t)) , t \in I_{\text{max}}\} | \text{Graph}(y) = \{ (t, y(t)) , t \in I_{\text{max}}\} | ||||
| \] unbeschränkt ist, weil $t \to t_0 + T^{*} = \infty$ oder | \] unbeschränkt ist, weil $t \to t_0 + T^{*} = \infty$ oder | ||||
| $\Vert y(t) \Vert \xrightarrow{t \to t_0 + T^{*}} \infty$. | $\Vert y(t) \Vert \xrightarrow{t \to t_0 + T^{*}} \infty$. | ||||
| \begin{figure}[h] | |||||
| \centering | |||||
| \begin{tikzpicture}[declare function={f(\x) = tan(deg(\x-2));}] | |||||
| \begin{axis}% | |||||
| [default 2d plot, | |||||
| grid=none, | |||||
| ymax=4, | |||||
| ymin=-4, | |||||
| xmin=0, | |||||
| xmax=4, | |||||
| xtick=\empty, ytick=\empty, | |||||
| ] | |||||
| \addplot[domain=0.56:3.56,samples=100,smooth,red] {f(x)}; | |||||
| \draw[dashed] (0.56, 5) -- (0.56, -5); | |||||
| \draw[dashed] (3.45, 5) -- (3.45, -5); | |||||
| \draw (2.56, {f(2.56)}) node[fill,inner sep=1pt]{}; | |||||
| \draw (2.56, {f(2.56)}) node[draw,shape=rectangle,minimum width=10mm, minimum height=7mm, | |||||
| anchor=center] {}; | |||||
| \draw (2.85, {f(2.85)}) node[fill,inner sep=1pt]{}; | |||||
| \draw (2.85, {f(2.85)}) node[draw,shape=rectangle,minimum width=9mm, minimum height=7mm, | |||||
| anchor=center] {}; | |||||
| \draw (3.02, {f(3.02)}) node[fill,inner sep=1pt]{}; | |||||
| \draw (3.02, {f(3.02)}) node[draw,shape=rectangle,minimum width=6mm, minimum height=6mm, | |||||
| anchor=center] {}; | |||||
| \draw (3.12, {f(3.12)}) node[fill,inner sep=1pt]{}; | |||||
| \draw (3.12, {f(3.12)}) node[draw,shape=rectangle,minimum width=5mm, minimum height=5mm, | |||||
| anchor=center] {}; | |||||
| \draw (3.18, {f(3.18)}) node[fill,inner sep=1pt]{}; | |||||
| \draw (3.18, {f(3.18)}) node[draw,shape=rectangle,minimum width=4mm, minimum height=4mm, | |||||
| anchor=center] {}; | |||||
| \draw (3.65, -4) node{$\partial D$}; | |||||
| \end{axis} | |||||
| \end{tikzpicture} | |||||
| \caption{Schrittweise Fortsetzung einer Lösung bis zum Rand von $D$} | |||||
| \end{figure} | |||||
| \end{bem} | \end{bem} | ||||
| \begin{korollar}[Globale Existenz] | \begin{korollar}[Globale Existenz] | ||||
| @@ -227,6 +263,7 @@ | |||||
| \end{tikzpicture} | \end{tikzpicture} | ||||
| \caption{Für $y_0 = 0$ existieren beliebig viele zusammengesetzte Lösungen.} | \caption{Für $y_0 = 0$ existieren beliebig viele zusammengesetzte Lösungen.} | ||||
| \end{subfigure} | \end{subfigure} | ||||
| \caption{Zur Uneindeutigkeit von AWA} | |||||
| \end{figure} | \end{figure} | ||||
| Beobachtung: $f(t,x)$ ist stetig auf $\R \times \R$, aber $f(t,x)$ ist nicht Lipschitz stetig | Beobachtung: $f(t,x)$ ist stetig auf $\R \times \R$, aber $f(t,x)$ ist nicht Lipschitz stetig | ||||