cauchy_integral.tex (1078B)
1 \begin{tikzpicture} 2 \coordinate (O) at (0,0); 3 \coordinate (X) at (\xmax,0); 4 \coordinate (c) at (1.5,0); 5 \path (c) +(-\R,0) coordinate (min); 6 \path (c) +(\R,0) coordinate (max); 7 \draw[->,line width=0.9] (\xmin,0) -- (1.08*\xmax,0) node[right] {$\mathrm{Re}$}; 8 \draw[->,line width=0.9] (0,\ymin) -- (0,1.08*\ymax) node[left] {$\mathrm{Im}$}; 9 \draw (c) circle (\R); 10 \draw[->,black,very thick,line cap=round] (max) arc (0:40:\R) node[midway, right=0.02] {$\tau$}; 11 \tick{0.56, 0}{90}; 12 \tick{0.71, 0}{90}; 13 \tick{1.1, 0}{90}; 14 \tick{1.27, 0}{90}; 15 \tick{1.5, 0}{90} node[scale=0.9,below=-0.7] {$\lambda_{\mathrm{min}}, \ldots, \lambda_{\mathrm{max}}$}; 16 \tick{1.86, 0}{90}; 17 \tick{1.95, 0}{90}; 18 \tick{2.23, 0}{90}; 19 \draw [ 20 thick, 21 decoration={ 22 brace, 23 mirror, 24 raise=0.40cm 25 }, 26 decorate 27 ] (0.5, 0) -- (2.5, 0) 28 node [pos=0.5,anchor=north,yshift=-0.55cm] {$\lambda(\bm K)$}; 29 \node at (2.8, -0.95) {$\Gamma$}; 30 \end{tikzpicture}