title: How to check if a relation represented as a matrix (list of lists) is antisymmetric?
body: <p>How can I check if a relation represented as a matrix (list of lists) is antisymmetric?</p>
  <p>For example, the function should return true for;</p>
  <pre><code>(antisymm ((1 1 0) (0 0 1) (0 0 0)))
  </code></pre>
  <p>Example:</p>
  <pre><code>(antisymm ((1 1 0) (0 0 1) (0 0 0))) returns #t
  (antisymm ((1 1 0) (0 0 1) (0 1 0))) returns #f
  </code></pre>