>Writing <code>\exist</code>, results in: &exist;</li>
  <li>Writing <code>\exists</code>, results in: &exist;</li>
  <li>Writing <code>\empty</code>, results in: &empty;</li>
  <li>Writing <code>\emptyset</code>, results in: &empty;</li>
  <li>Writing <code>\isin</code>, results in: &isin;</li>
  <li>Writing <code>\in</code>, results in: &isin;</li>
  <li>Writing <code>\notin</code>, results in: &notin;</li>
  <li>Writing <code>\ni</code>, results in: &ni;</li>
  <li>Writing <code>\nabla</code>, results in