title: Matrix multiplication, element by element
body: <p>Is it possible to express Matlab operation  A.*B (multiplication element by element)</p>
  
  <pre><code>A.*B  = [a11 * b11, a12 * b12, ..., a1n * b1n; ...; am1 * bm1, ..., amn * bmn]
  </code></pre>
  
  <p>by a common matrix algebra?</p>