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<p>Binary operations are sometimes written using prefix or postfix notation, both of which dispense with parentheses.  They are also called, respectively, <a href="page.php?w=Polish_notation">Polish notation</a>  and <a href="page.php?w=reverse_Polish_notation">reverse Polish notation</a> .</p>

<p><big> Binary operations as ternary relations </big></p>
<p>A binary operation  on a set  may be viewed as a <a href="page.php?w=ternary_relation">ternary relation</a> on , that is, the set of triples  in  for all  and  in .</p>

<p><big> Other binary operations </big></p>
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