title: Decrease spacing between equal signs using latex "eqnarray"-command in matplotlib?
body: <p>I want to align the equal signs in matplotlib. Thus, I'm using the eqnarray environment in matplotlib:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  from matplotlib import rc
  
  rc('text',   usetex=True)
  rc('font',   size      = 7)
  
  fig = plt.figure(figsize=(3,2))
  ax  = fig.add_subplot(111)    
  
  ax.text(0.5,0.5 ,r'\begin{eqnarray*}' +\
               r'M                &amp;=&amp; 0.95' + '\\\\' +\
               r'\xi              &amp;=&amp; 0.5' + '\\\\' +\
               r'\mu              &amp;=&amp; 0.1' + '\\\\' +\
               r'a/b              &amp;=&amp; 0' + '\\\\' +\
               r'\delta_{99}/L    &amp;=&amp; 0' +\
               r'\end{eqnarray*}',
               verticalalignment='center',
               horizontalalignment='center')
  
  plt.savefig('output.pdf')
  plt.show()
  </code></pre>
  
  <p>The result looks like this:
  <a href="https://i.stack.imgur.com/5dxsQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5dxsQ.png" alt="enter image description here"></a></p>
  
  <p>How can I decrease the spacing in the vicinity of the equal signs?</p>