bswidth.tex

\begin{picture}(220,60)
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  \multiput(0,8)(30,6){8}{\line(5,1){10}}
  \multiput(0,18)(30,6){8}{\line(5,1){10}}
  \put(45,21){\circle*{3}}
  \put(55,21){\circle*{3}}
  \put(65,21){\circle*{3}}
  \put(75,26){\circle*{3}}
  \put(82.5,31){\circle*{3}}
  \put(90,36){\circle*{3}}
  \put(100,36){\circle*{3}}
  \put(70,35){$\mathcal{B}$}
  \put(110,30){\circle{3}}
  \put(112,21){$P'$}
  \put(140,36){\vector(0,1){10}}
  \put(140,62.66){\vector(0,-1){10}}
  \put(130,55){$\mu$}
  \put(160,30){\vector(0,1){10}}
  \put(160,60){\vector(0,-1){10}}
  \put(164,44){$\mu '$}
\end{picture}