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lda.tex
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lda.tex
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\documentclass{standalone}
\usepackage[T1]{fontenc}\usepackage{tikz}
\usepackage{amsmath, amsfonts}
\usetikzlibrary{arrows.meta}
\begin{document}
\begin{tikzpicture}
\draw[] (0.000000, 0.000000) circle (0.350000);
\draw[] (1.540000, 0.000000) circle (0.350000);
\draw[] (3.080000, 0.000000) circle (0.350000);
\draw[, fill=gray] (4.620000, 0.000000) circle (0.350000);
\draw[] (1.540000, 1.540000) circle (0.350000);
\draw[] (3.080000, 1.540000) circle (0.350000);
\node[] at (0.000000,-0.650000) {$\alpha$};
\node[] at (1.540000,-0.650000) {$\theta$};
\node[] at (3.080000,-0.650000) {$z$};
\node[] at (4.620000,-0.650000) {$w$};
\node[] at (0.890000,1.540000) {$\eta$};
\node[] at (3.730000,1.540000) {$\beta$};
\draw[-latex] (0.350000, 0.000000) -- (1.190000, 0.000000);
\draw[-latex] (1.890000, 0.000000) -- (2.730000, 0.000000);
\draw[-latex] (3.430000, 0.000000) -- (4.270000, 0.000000);
\draw[-latex] (1.890000, 1.540000) -- (2.730000, 1.540000);
\draw[-latex] (3.080000, 1.190000) -- (4.275317, 0.060777);
\draw[] (2.230000, 0.600000) -- (5.470000, 0.600000) -- (5.470000, -0.900000) -- (2.230000, -0.900000) -- cycle;
\node[] at (5.230000,-0.660000) {$N$};
\draw[] (0.690000, 0.850000) -- (5.970000, 0.850000) -- (5.970000, -1.150000) -- (0.690000, -1.150000) -- cycle;
\node[] at (5.730000,-0.910000) {$M$};
\draw[] (2.230000, 2.140000) -- (4.230000, 2.140000) -- (4.230000, 0.940000) -- (2.230000, 0.940000) -- cycle;
\node[] at (3.990000,1.180000) {$k$};
\end{tikzpicture}
\end{document}