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sinx-Beispiel hinzugefügt
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@ -846,16 +846,23 @@ $\qed$
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ist Zerlegung in nichtleere, disjunkte, abgeschlossene Teilmengen
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$\Rightarrow$ Widerspruch
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\item Sei $X = \Set{(x,y) \in \mdr^2| x^2 + y^2 = 1 \lor y = 1 +2\cdot e^{-\frac{1}{10} x}}$
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\item Sei $X = \Set{(x,y) \in \mdr^2| x^2 + y^2 = 1 \lor y = 1 +2\cdot e^{-\frac{1}{10} x}}$.
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Abbildung \ref{fig:topology-spiral} veranschaulicht diesen Raum.
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\begin{figure}[htp]
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\centering
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\input{figures/topology-spiral}
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\caption{Eine Kreislinie in der Mitte sowie eine Endlosspirale,
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die sich immer weiter dem Kreis annähert. $X$ ist
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zusammenhängend, jedoch nicht wegzusammenhängend.}
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\label{fig:topology-spiral}
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\subfloat[Spirale $S$ mit Kreis $C$]{
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\input{figures/topology-spiral}
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\label{fig:topology-spiral}
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}%
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\subfloat[Sinus]{
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\input{figures/topology-sinx.tex}
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\label{fig:sinx}
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}%
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\caption{Beispiele für Räume, die zusammenhängend, aber nicht wegzusammenhängend sind.}
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\label{fig:zusammenhang-beispiele}
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\end{figure}
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Sei $U_1 \cup U_2 = X, U_1 \neq U_2 = \emptyset, U_i$ offen.
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@ -910,7 +917,7 @@ $\qed$
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\end{definition}
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\begin{beispiel}
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\xindex{Kleeblattknoten}\xindex{Achterknoten}\xindex{Knoten!Trivialer}
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\xindex{Kleeblattknoten}\xindex{Achterknoten}\xindex{Knoten!trivialer}
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\begin{figure}[htp]
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\centering
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\subfloat[Trivialer Knoten]{
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26
documents/GeoTopo/figures/topology-sinx.tex
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26
documents/GeoTopo/figures/topology-sinx.tex
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@ -0,0 +1,26 @@
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\begin{tikzpicture}
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\begin{axis}[
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axis x line=middle,
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axis y line=left,
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enlarge y limits=true,
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xmode=log, % Logarithmic x axis
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xmin=0.01, xmax=1, % Positive domain...
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xticklabel=\pgfmathparse{exp(\tick)}\pgfmathprintnumber{\pgfmathresult},
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xticklabel style={/pgf/number format/.cd,fixed}, % Use fixed point notation
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width=8cm, height=6cm, % size of the image
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grid = major,
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grid style={dashed, gray!30},
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ymin=-1, % start the diagram at this y-coordinate
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ymax= 1, % end the diagram at this y-coordinate
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axis background/.style={fill=white},
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ylabel=$Y$,
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xlabel=$X$,
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legend style={at={(0.9,0.95)}, anchor=north}
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]
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\addplot[domain=0.0105:1, red, thick,samples=2000] {-sin(deg(1/(x)))};
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\addplot[domain=0.0105:0.011, blue, thick,samples=20] {10};
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\addlegendentry{$\{(x, \sin(\frac{1}{x})) \in X \times Y\}$}
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\addlegendentry{$(-1,1) \subseteq Y$}
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\end{axis}
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\draw[ultra thick,blue] (0,0.5) -- (0,4);
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\end{tikzpicture}
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