Dieses Bild verdeutlicht das Konzept der Kommutativität binärer Operatoren anhand des Black Box-Modells.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Commutativity_of_binary_operations.svg" title="File:Commutativity of binary operations.svg">File:Commutativity of binary operations.svg</a>: <a href="//commons.wikimedia.org/w/index.php?title=User:Talonnn&amp;action=edit&amp;redlink=1" class="new" title="User:Talonnn (page does not exist)">Talonnn</a></li>
<li>derivative work: <a rel="nofollow" class="external text" href="http://kulla.me">Stephan Kulla</a> (<a href="//commons.wikimedia.org/wiki/User:Stephan_Kulla" title="User:Stephan Kulla">User:Stephan Kulla</a>)</li></ul>
derivative work of <a href="//commons.wikimedia.org/wiki/File:Commutativity_of_binary_operations.svg" title="File:Commutativity of binary operations.svg">File:Commutativity of binary operations.svg</a>