<area shape="rect" href="$a00101.html" title="Base class for all structures that are semirings." alt="" coords="5,343,360,369">
<area shape="rect" href="$a00082.html" title="The base class of all structures that are monoids." alt="" coords="105,263,260,289">
<area shape="rect" href="$a00100.html" title="Base class of all structures that are semigroups." alt="" coords="93,183,272,209">
<area shape="rect" href="$a00122.html" title="Structure\&lt; Self \&gt;" alt="" coords="115,103,251,129">
<area shape="rect" href="$a00122.html" title="Base class for the hierarchy of structural element types." alt="" coords="141,7,224,33">
<area shape="rect" title="\&lt; Self \&gt;" alt="" coords="179,31,187,39">
<area shape="rect" title="\&lt; Self \&gt;" alt="" coords="179,99,187,107">
