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9 |
9 |
10 %\title{Blob Homology} |
10 %\title{Blob Homology} |
11 \title{Sandbox} |
11 \title{Sandbox} |
12 |
12 |
13 \begin{document} |
13 \begin{document} |
14 $$ |
14 |
15 \begin{tikzpicture}[baseline,line width = 1pt,x=1.5cm,y=1.5cm] |
15 |
16 \draw (0,0) node(R) {} |
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17 -- (0.75,0) node[below] {$\bar{B}$} |
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18 --(1.5,0) node[circle,fill=black,inner sep=2pt] {} |
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19 arc (0:80:1.5) node[above] {$D \times I$} |
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20 arc (80:180:1.5); |
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21 \foreach \r in {0.3, 0.6, 0.9, 1.2} { |
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22 \draw[blue!50, line width = 0.5pt] (\r,0) arc (0:180:\r); |
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23 } |
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24 \draw[fill=white] |
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25 (R) node[circle,fill=black,inner sep=2pt] {} |
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26 arc (45:65:3) node[below] {$B$} |
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27 arc (65:90:3) node[below] {$A$} |
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28 arc (90:135:3) node[circle,fill=black,inner sep=2pt] {} |
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29 arc (-135:-90:3) node[below] {$C$} |
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30 arc (-90:-45:3); |
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31 \draw[fill] (150:1.5) circle (2pt) node[above=4pt] {$D$}; |
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32 \node at (-2,0) {\scalebox{2.0}{$\uparrow f$}}; |
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33 \node at (0.2,0.8) {\scalebox{2.0}{$\uparrow \psi$}}; |
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34 \end{tikzpicture} |
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35 $$ |
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36 \end{document} |
16 \end{document} |